From the labs of F-Secure:

A new Warezov spam run is underway, using a “Happy New Year” postcard as its disguise.

The attachment is named and the text of the message reads:

   Hi, you’ve just received a postcard.
   For: (your e-mail address)
   From: —
   Text: Happy New Year!
   Click on attachment to view a postcard.

When run, the malware connects to and downloads a Warezov variant.

We detect this now as Trojan-Downloader.Win32.Small.edn.