SYMPTOMS:
The malware script doesn't have any obvious symptoms because it is a "gateway" towards other web-based malware : Trojan.Exploit.ANNZ.
TECHNICAL DESCRIPTION:
The malware javascript has an invisible iframe which leads to Trojan.Exploit.ANNZ, that has malicious actions - downloads a backdoor (Backdoor.Generic.76302).
http://www.bitdefender.com/VIRUS-1000418-en--Trojan.JS.IFrame.ACN.html
Troj/Mdrop-BWG
Category Viruses and Spyware
Type Trojan
Troj/Mdrop-BWG drops the file <System>
<Random name>.dll which is detected as Mal/Behav-228.
http://www.sophos.com/security/analyses/viruses-and-spyware/trojmdropbwg.html?_log_from=rss

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic