A spam campaign is the starting point for a Blackhole-Cridex malware attack.

It all starts with an email entitled “Re:Fwd: Order 321312” which reads: Welcome, You can download your Microsoft Windows License here. Microsoft Corporation,” said researchers at security company GFI Labs.

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Microsoft has nothing to do with the emails and the emails have nothing to do with Windows licenses.

Instead, when users click on the link, they go to a website hosted on a Russian domain, which contains and obfuscated JavaScript designed to load another web page, the researchers said.

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While the victim is viewing a message that reads “Please wait a moment. You will be forwarded,” in the background, the BlackHole exploit kit is working on trying to find a security hole to push malware onto the victim’s computer.

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