Convincing tax-themed spam leads to malware

With the US tax season underway, users are constantly being targeted with tax-themed spam.

The latest one to be spotted is an email purportedly coming from Inuit, a US company that makes QuickBooks, a popular piece of software for bookkeeping:

The offered link takes users to a webpage that redirects them via JavaScript to another website hosting the Blackhole exploit kit. If successful in exploiting a vulnerability, it delivers malware to the user’s computer.

Inuit has already posted a warning to their customers about the spam email.

“Sophos anti-spam products have been detecting and blocking these messages for quite some time, but the messages are so convincing that our own customers have been reporting the blocks to us as false-positives!” says Chester Wisniewski.

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