Pump-and-dump stock spam is a classicexample of sophistication and diversity of spam techniques. Recentlythe pump-and-dump spammers have started using mp3 files as a new methodof spreading stock spam.
In the latest observations we’ve seen an mp3 file as an attachmentin the body of an email message – without any content – and the subjectline usually includes “RE:”, “FW:”, or is sometimes just blank. The“From:” address is usually random. Another feature of this newpump-and-dump stock attack is that the mp3 files have random names,such as the following examples:
The average file size is approximately 63.3 kb, with the garbledstock tip lasting for about 30 seconds. The Audio content soundssomething like the below example:
“Hello, this is an Investor alert. XXXX Inc. hasannounced it is ready to launch its...