Update: the domain from which the attack originates, fbhole.com, is now offline, which means the attack is over.

A new malware attack is spreading via Facebook's news feed, according to reports from users on Twitter.

The attack consists of a message starting with the phrase "try not to laugh xD," followed by this link: "http://www.fbhole.com/omg/allow.php?s=a&r=72306" (don't open it).

The attack, which seems to repost the message without your permission, uses the oldest trick in the book. Once you click on the link, you'll see Facebook grayed-out and a weird dialogue that looks like a Windows error message, containing the phrase, "If I don't, someone else do it." If you click anywhere on the page, you'll repost the link because your click will land on a moving frame with very low opacity. By clicking on it, you're actually clicking the "publish" button on Facebook.

Interestingly enough, the root index file of the site in question (www.fbhole.com) contains only the phrase, "My Facebook," which links to a nonexistent Facebook profile.

We've seen similar Facebook attacks before, and although they may be harmless, clicking on suspicious links is always dangerous. If you've seen this (or a similar) attack on Facebook, please let us know in the comments.

Image courtesy of iStockphoto, Antagain