This one’s scary since I’m an eFax user. But I was suspicious that it was asking me to click on a link (pointing to a server in Germany) rather than open an attachment. There were lots of warnings in 2010 about fake eFax messages delivering malware. I don’t know what this one does and don’t intend to find out. Here’s what they look like.
Sender: eFax (email@example.com)
Subject: Corporate eFax message – 4 pages
Fax Message [Caller-ID: 369-716-1218]
You have received a 2 pages fax at 2012-08-16 11:76:67 GMT.
* The reference number for this fax is min1_did32-3198092476-7034547233-89.(link points to http://ftp.eutech-scientific.de/ecmYLjPx/index.html)
View this fax using your PDF reader.
Click here to view this message
Please visit www.eFax.com/en/efax/twa/page/help if you have any questions regarding this message or your service.
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A second version said “2 pages” and had a different caller ID and time stamp but pointed to the same site.