Thousands of sites were compromised with this type of malware. Some of the domains distributing malware:
http://ens122zzzddazz.com/pmg.php?d=x http://aising32austral.rr.nu/pmg.php?dr=1 .. many others ..
Affecting: Any web site (most common on WordPress).
Clean up: Malware is hidden at the index.php or index.html files.
Last update: Aug/2012