Sophos detects the offending webpages as being infected by Troj/Iframe-ET.
Facebook Users Hit with Clickjacking Worm
"LOL This girl gets OWNED after a POLICE OFFICER reads her STATUS MESSAGE," "This man takes a picture of himself EVERYDAY for 8 YEARS!!" and "The Prom Dress That Got This Girl Suspended From School."
"Some of the Web pages had over 300,000 people 'liking' them," Graham Cluley, senior technology consultant at Sophos, told eWEEK.
Essentially, the clickjacking attack tricks users into marking a page "like" without realizing it and then recommending the page to their Facebook friends