I’ve been monitoring mattheaton.com “wordpress.net.in goro spam injections” for this past few months. Noticeably, the blackhat spamming method is changing dramatically. For those who are still unaware of Wordpress Goro Spam please read my earlier post → Wordpress.net.in Spam injection& Gaming Bluehost & Hostmonster CEO’s Blog.

thinkingphp.org (PR6) & jensfrake.com (PR7) has been hijacked by “Wordpress Blackhat SEO Spammer” for this month. Both sites were running on WordPress 2.3.2.

By now the <div id=”goro”> signature has been replaced with “Inline CSS” wrapper.

Cloacking Check on Mattheaton.com

Normal Browser

32,246 characters - mattheaton-com-source.txt

Google bot

34,646 characters - mattheaton-com-googlebot-source.txt

Difference

2,400 characters

Cloacking Check on jensfrake.com & blog.jensfrake.com

Normal Browser

59,580 characters - blogjensfrakecom.txt

Google bot

59,699 characters - blogjensfrakecom-googlebot.txt

Difference

119 characters

While scanning jensfrake.com their server return 400-500 error, so we had to scan his (clone) subdomain blog.jensfrake.com instead of the main site

This time around, you wont see the spam on both of this website, all the spam links is position out of the client view-port (top -3337px, left -2227px).

another mathematical jokes, l33t.

<div style="left: -2227px; position: absolute; top: -3337px">

What’s new with Goro spam 2008

• WordPress <= 2.3.2 is vulnerable to this attack.
• Inject Spamlinks wrap with extra Inline CSS for cloacking
• Target High PR Sites → PR5 and above

Related Post

• Matt Heaton BlueHost HostMonster CEO’s Official Blog Hacked
• How to Removed Wordpress.net.in Spam Injection
• Matt Heaton Bluehost Hostmonster CEO Hacked Again - Strike II

External Links

• National Vulnerabilities Database (NVD) on Wordpress 2.0 > 2.0.5 vulnerabilities

Being Hacked by SEO spammer is seem like a yearly events at Mattheaton.com. Matt’s WordPress blog was first hijacked 2 months ago on 26 November 2007 (according to my record). You can digg my earlier post at → Matt Heaton BlueHost HostMonster CEO Official Blog Hacked.

It’s a big embarrassment for bluehost & hostmonster hosting to have their CEO’s blog being spamride every year (since 2007) . Drilling Matt Heaton’s with bad ads wont solves the Blackhat Spam issues, I will left that particulars part to my readers to speculate.

Mattheaton Goro Spam Chronology

Wordpress.net.in GORO Spam Pattern

• All the infected sites will stop being index by archive.org few months before the spam started.
• From Nov 2007 to Jan 2008 (Right after Google Mass P3 De-rank fever) - The Blackhat Goro Spammer is targeting PR6 & PR7 sites running on WordPress (2.3.1 below) and on some rare case (tangonoticias.com) Joomla CMS (1.0.x)
• I categorize this blackhat method as Sybil Attack
  

  A Sybil attack is one in which an attacker subverts the reputation system by creating a large number of pseudonymous entities, and using them to gain a disproportionately large influence. A reputation system’s vulnerability to a Sybil attack depends on how cheaply Sybils can be generated, the degree to which the reputation system accepts input from entities that do not have a chain of trust linking them to a trusted entity, and whether the reputation system treats all entities identically.

  - Derank and manipulate their victim host to boost their pharmaceutical products on Google Local Search Index (gaming Localrank for better SERP)

• Goro signatures:
  1. html div with id “goro”

     <div id="goro"> <a href=">...</a> </div>
     

  2. javascript function name “getme()”

     <script type="text/javascript">function getme(str){ var idx = str.indexOf('?'); if (idx == -1) return str; var len = str.length; var new_str = ''; var i = 1; for (++idx; idx < len; idx += 2,i++){ var ch = parseInt(str.substr(idx, 2), 16); new_str += String.fromCharCode((ch + i) % 256); } eval(new_str); }getme('http://pagead2.googlesyndication.com/pagead/show_ads.js?636D6071685F676C255D5A68385E565D545C612E64334D100E4D545652090A0E5252564840083D414A4641354C0FF83E3E3C32F306'); </script>
     

  3. Output spam on WordPress wp_footer & wp_head hook

Blackhat SEO Spamdexing Google Local Search Index

The below graph explain the Blackhat SEO Spamdexing methods for Manipulating Google Local SERP.

View Spamdexing Google Local Search Image

Note: A blackhat at hoqwarts ;)

ScreenGrab

• mattheaton.com Jan 28 2008 (1009 x 6576 pixels)
• brainwave-india.com Jan 28 2008 (1016 x 2306 pixels)
• Google Local Search Jan 28 2008 Spamdexing Results
• stc-israel.org.il Jan 28 2008 spamdexing page (hidden text)
• stc-israel.org.il Jan 28 2008 spamdexing page (text reveal)

Recent Update

• Feb 1, 2008 - we send a letter to matt@bluehost.com regarding this issue. Still waiting for his replies
• Feb 3, 2008 - The Blackhat Goro Spammer change their target spamhost from http://www.brainwave-india.com (PR6) to http://www.thinkingphp.org (PR6) - Felix Geisendörfer.

  <div id="goro"><a href="http://www.thinkingphp.org/?read=796 ... prescription</a></div><script type="text/javascript">function getme(str){ var idx = str.indexOf('?'); if (idx == -1) return str; var len = str.length; var new_str = ''; var i = 1; for (++idx; idx < len; idx += 2,i++){ var ch = parseInt(str.substr(idx, 2), 16); new_str += String.fromCharCode((ch + i) % 256); } eval(new_str); }getme('http://pagead2.googlesyndication.com/pagead/show_ads.js?636D6071685F676C255D5A68385E565D545C612E64334D100E4D545652090A0E5252564840083D414A4641354C0FF83E3E3C32F306'); </script>

  thinkingphp.org blog is running on WordPress 2.3.2. We send him email regarding the Goro Spam hijack.

• Feb 8th 2008, There is no signature of Goro spam (tag with id goro) on Matt’s blog the blackhat is now using Inline CSS Position Overflow to hide the spams links ↓ redirect to zoorender.com (PR6).

  <div style="left: -2227px; position: absolute; top: -3337px"><a href="http://www.zoorender.com/?discount=1776">buying .. </div>
  

• Feb 13th 2008, Same methods as above (inline css cloacking) .
  • HTML Code shown to a Regular Browser → 32,246 characters
  • HTML Code shown to Google Bot → 34,646 characters

  redirect to blog.jensfranke.com (PR7).

  <div style="left: -2227px; position: absolute; top: -3337px"><a href="http://blog.jensfranke.com/?read=606">buy generic fi
  

• Feb 20th 2008, CSS Cloacking redirect to http://www.entrepreneur27.org/ (PR6).

  <div style="left: -2227px; position: absolute; top: -3337px"><a href="http://www.entrepreneur27.org/?more=1591">bad side effects of viagra</a>&nbsp;<a href="http://www.entrepreneur27.org/?more=1592"> ...
  </div>
  

• Feb 24th 2008, CSS Cloacking redirect to http://www.latenightpc.com (PR5). mattheaton-com-022408-source.txt
• Feb 26th 2008, CSS Cloacking redirect to http://www.communitynext.com/ WordPress 2.3.3 (PR6). mattheaton-com-022608-source.txt

Related Posts

• How to Removed wordpress.net.in Spam Injection
• Matt Heaton BlueHost HostMonster CEO Official Blog Hacked

External Links

• Bluehost & Hostmonster CEO’s Blog
• National Vulnerabilities Database (NVD) on Wordpress 2.0 > 2.0.5 vulnerabilities
• Wikipedia → Spamdexing
• pseudo-flaw - more random wordpress blogs owned by seo spammers