VirusTotal URL content scan bypass example

While searching for virtualization back-up solutions for ESXi, I came accros the following website:

http://joealdeguer.com/backing-up-and-restoring-esxi-virtual-machines/index.php

But the proxy server that filters internet browsing, where I am at the moment, yelled a warning and blocked the page:

(Yes, the is a Squid proxy server powered, and antivirus engine is ClamAV).

As you can see, Clam says "PUA.Script.Packed-1.

Now, let's try VirusTotal for this same URL:

https://www.virustotal.com/en/url/9be98ad47adc382824285f27289bd20cc9f2b71ba1f5761a8c15ecb95b877a1b/analysis/1364141731/

Well... nothing found! even Clam...

And no, don't tell me it's because it's a PUA, and therefore it's not reported in the main view...!  The "additional information" tab says:

Websense ThreatSeeker URL category Uncategorized.

Quttera domain information See Quttera report

Sucuri SiteCheck domain information Full threat report

Webutation domain information Verdict..................: unsure Adult content............: no Safety score.............: 70 Take a look at the full Webutation review.

URL after redirects http://joealdeguer.com/backing-up-and-restoring-esxi-virtual-machines/

Network location to IP address resolution 108.56.209.3

Response code 200

Response headers via: HTTP/1.1 GWA x-powered-by: PHP/5.3.10-1ubuntu3.6 x-google-cache-control: remote-fetch vary: Accept-Encoding server: Apache/2.2.22 link: <http://wp.me/p2SbCr-cs>; rel=shortlink date: Sun, 24 Mar 2013 16:15:36 GMT content-type: text/html; charset=UTF-8 x-pingback: http://joealdeguer.com/xmlrpc.php

Response content SHA-256 82132433d7fe11cacada4b1a9573c9f2b292702ed7198b89e7078d9a35e1dcf5

Google trends for the term joealdeguer: See full report

Alexa daily reach Estimated percentage of global internet users who visit joealdeguer.com:

Here, OK the URL by itself is not categorized as "malicious", but at least one AV engine (Clam) should trigger a warning on VT, if it really matches the AV regular behavior.

In a nutshell, you may want to try VirusTotal for URL scan, but even if it does not give you any result, I do suggest you to manually download the content targetted by the URL, and then upload it to VirusTotal, to double check.

Small update:

if you download the webpage, save it as " web archive" in IE, and upload that to VT, here are the results:

https://www.virustotal.com/en/file/1d9df59ad8b58e5101361b45b2a4ae06fcea2f9e814acedcc3c335c7a178cc6c/analysis/1364142725/

Yes, there you see that Clam does detect a PUA (additional information tab).