WordPress Hacked Redirect, How to Detect and Clean it
If your website was hacked there are more chances that attackers might insert malicious code that redirects your website to phishing or malware websites to grab traffic, that’s just adding insult to injury – and can really damage your website reputation.
In case your site is redirecting visitors to phishing or a malware site, you will possibly get blacklisted by Google! Google isn’t going to take any chances with its reputation, if your webpage(s) smell even the slightest bit fishy, it's going blacklist you. I will cover Google blacklist later on in this article.
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What Is Malicious Redirect – A Definition
A hacker can use a script they created to systematically redirect your website to a Scam Website or an Adult(call me Porn) website in order to down the reputation of your own website. Most commonly they will use the following tricks to change the behavior of a website!
- Upload or create a file in your WordPress site with the malicious script encoded.
- Add themselves as a Ghost Admin on your website.
- Execute PHP code they send through a browser.
- Collect personal information like Email, for spam purposes.
- Change anything on your website for their own purposes, often for spamming.
If a file is added, it’s often named to look like a legitimate file like that’s the part of WordPress core files. The file could be named sunrise.php, wp-users.php, wp-system or wp-configuration.php or something similar. Typically hackers add the malicious scripts to .htaccess, wp-includes, wp-content/themes, wp-content/plugins or wp-content/uploads folders, or may also change your wp-config.php file.
Malicious Redirects in Header
Encoded Malicious code is added at the Top of Header file of your active WordPress theme: header.php
Malicious Redirects in Footer
Malicious script is added in the footer of the active WordPress theme.
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What Does Blacklisting Look Like?
So, we’ve already talked about the methods you may check and find out if your website has been injected with malicious scripts, but I feel like it’s a good idea to spend additional time in what we refer to in one of our previous articles as the "symptoms" of a site being hacked and blacklisted. Not every blacklisted website will exhibit those signs, however most of them can help you find out if your site is in trouble:
- There is a huge/sudden traffic to your website for specific keywords that have nothing to do with your website content – particularly related to pharmaceuticals.
- Your site is suddenly redirecting to anonymous websites not in your possession.
- Ghost Administrators appear in your website’s dashboard who weren’t created by you or other legitimate admin users.
- Your website is unexpectedly flagged as containing malware in search engine results or by desktop or cellular anti-virus detection software program.
- Your hosting provider moved your website to junk or quarantine mode.
It’s important to keep in mind that Google can provide various safety warnings as well. These warnings may appear in the search engine results page where your website is indexed. Most common warnings you will see are listed below.
This site may harm your computer
Example: Google has detected malicious code on your website.
This warning appear when Google believes your website contains a Trojan which is triggering a download popup that is malicious – like fake Anti-Virus popups, Fake shopping discounts etc.
This site may be hacked
Example: Google has detected your site has been hacked.
This warning appears when Google Google has a solid reason that site has been completely compromised or hacked and taken over by using someone apart from you.
A Step-by-Step Guide For Removing The Malicious Scripts And Redirections
Step 1: Scanning Your WordPress Site
In case you suspect that your website has been hacked with a malicious script there are various ways of checking, however, before you run any of those, you need to generate a complete backup of your website. Despite the fact that your site can be hacked, there’s still a chance, things could worsen before they get better.
Having a backup is maybe the next best thing after sliced bread. If you accidentally make a mistake while cleaning your site, your backup acts as your fail safe.
You could restore your website to the point where you first began working on it and keep investigating from there as if nothing else happened. Once you have backed up your complete website, you’re ready to get started.
Extra Tip: Here are some websites that offer free scans for malicious files.
- Unmask Parasites – Helps you to know if your website has been hacked. This is a great first-step in figuring out whether or not there’s a problem.
- Norton Safe Web – You can quickly find out if there are any threats related to your website.
- Quttera – Deeply scans your site for malware.
- VirusTotal – One of the best online scan website available to scan your website or IP Address for Common Viruses, Malicious scripts, Hidden Backdoors, etc. It uses over 50+ online antivirus scanners to get more accurate results.
- Web Inspector – This website scan for backdoors, , injected scripts, malicious redirections code with a fairly detailed report.
- Scan My Server – Scans for malware, SQL Injections, XSS and more with detailed report. The detailed report is emailed to you and takes about 24 hours.
Step 2: Locate the Suspicious Code
There are various places where you can look to locate the malware on your website. It’s not always an easy way to scan the code on each page of your website chunk by chunk. Sometimes, the culprit is enclosed somewhere in your server. Still, there are some places that attackers, target mostly. You'll need ftp/ftps login details to get access to these places to start the malware cleaning process.
In case your website is suddenly redirecting to an anonymous website(s), you need to take a look at the following areas for suspicious code:
- Core WordPress Files
- Your website’s index file (check both index.php and index.html!)
- .htaccess file
In case your website is triggering visitors for downloads, you should take a look at out the following places:
- Header.php: Current Theme header file
- Footer.php: Current theme footer file
- Your website’s index file (check both index.php and index.html!)
- Your theme’s files
You can also take advantage of the Google Diagnostic Page to figure out specifically what part of your website has been compromised. Is it only 1 page ? One directory? Or the entire website?
Step 3: Dig Deeper: Pretend You’re a Bot or User Agent
Sometimes running tests to analyze if your website is infected with malware would put your own machine in danger. So, to bypass this, you can use cURL CLI (Command Line Interface) to pretend you're a Google bot or a user agent.
You can enter the following command to emulate a bot through an ssh client:
$ curl –location -D – -A "Googlebot" somesite.com
Once you enter this, you should look for something that doesn’t make sense in the code. So, bits which are in a different language than your own or content that looks like gibberish in general. Yes, you’ll need to recognize html at the least, here. Something in an iFrame or script tag have to grab your attention, too.
You can also use this little code to emulate a user agent(again through an ssh client):
$ curl -A "Mozilla/5.0 (compatible; MSIE 7.01; Windows NT 5.0)" http://www.somesite.com
You can edit or replace the "browser" tag which is referenced here depending on your needs.
A few different commands you might want to get familiar with are Grep and Find which work through an ssh client. These commands will help you to discover where the hacking took place on your website, so then manually you can remove the malicious code that placed you on Google's Blacklist.
Here's a list of useful resources to speed up the process of cleaning your site on the terminal.
Step 4: Removing Bad Code
In case your website has been injected with malware, you'll need to remove the malicious scripts that caused the redirections to the abusive websites. If the attackers created new pages with malicious code, you can remove them from Search Engine Results altogether by going to Google 's Search Engine Console and using the Remove URLs Feature.
Next you should update the theme, plugins, and install any new core updates that are available. Make sure everything is as up to date as possible. This will reduce your website’s vulnerabilities.
Finally, change all of the passwords on your website. And I mean all of them! Not just the WordPress Administrator Password, you also need to reset the passwords for your FTP Account, Regenerate WordPress Salt Keys, Database(s), Hosting, and anything else related to your website to ensure the security.
Re-generate WordPress Salt Key
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Step 5: Resubmit Your Site
If your website was blacklisted due to malicious redirections, and it’s been removed from Google's search results, you need to submit your site for review. Otherwise, Google won't know that you’ve taken meaningful steps to remedy the trouble.
If your website was involved in phishing, you’ll need to submit a put up a reconsideration request through Google Webmaster Tools(it's now called as Google Search Console). I’m going to assume your website is already added, so when you’re logged in, click on Search Traffic >> Manual Actions. You should then be prompted to submit a review.
Plugins to Help Test and Clean Your Site
Here are some WordPress plugins which can detect infected files:
Keeping Your Site Secure
In order to keep your site secure you need to make sure you follow the guidelines found below:
- Have your WordPress site core files updated.
- Have your themes and plugins updated.
- Use a Safe Secure WordPress Hosting Service, if possible choose one which can Manage your WordPress Site instead of just from Hosting it.
- If you choose to use a reseller hosting account under a non WordPress Friendly Hosting Provider then you should avoid adding sites as addons under your main account. You can setup those sites in a separate site account.
- Remove any inactive themes or plugins you don't plan to use in your site.
- Review your WordPress plugins and themes and make sure all of them are recently updated by its developers, if not you should seek some alternatives and remove them from your WordPress Site.
- Never install nulled themes or plugins.
- Keep one or two admin accounts, downgrade the rest of your admin users into an author or an editor.
- Remove all dev/demo setups of your WordPress installation outside your public directory.
WordPress Malware Removal Services
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January 2, 2017 at 5:15 pm
Very comprehensive article. I like all the resources you gave along with warnings site owners may get when their site gets compromised.
Fix My WP
January 2, 2017 at 7:11 pm
Thank you Lynn 🙂
January 18, 2017 at 8:45 pm
Great and free info for a very important issue! Thank you for this professional article!
Vũ Minh Chiến
February 13, 2017 at 6:05 am
Thank you very much!
August 14, 2017 at 7:24 pm
Apple Valley Solar Contractor
August 28, 2017 at 12:40 pm
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