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Attachments and Blank Messages Assist Spam Spike

by Marianna Schmudlach / June 16, 2009 1:50 AM PDT

06-15-2009 05:22 PM
Samir Patil Samir Patil writes...


Over the past few weeks we?ve observed an increase in spam emails carrying attachments of various file types, such as jpg, jpeg, png, zip, and rtf. Attachment spam volumes slowly crept upward between May 1 and June 13, 2009.


The main target of image spam is the health spam category, which usually has an embedded jpeg, jpg, or png image promoting ED pills. We?ve observed a spike in spam carrying rich text format (.rtf) attachments between the last week of May 2009 and the early days of June 2009. The email has a blank message body with an attached .rtf file of approximately 360 bytes. This file contains online pharmacy promotional messages and a URL that leads users to an online pharmacy store. These emails use random subject lines that are usually obfuscated, misspelled, or even meaningless.

Various subject lines observed in these spam email are as follows:

More: https://forums2.symantec.com/t5/blogs/blogarticlepage/blog-id/spam/article-id/201

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