It was a completely unsolicited email from an unknown party.  Here was the initial part of the fraudulent email message (that was from "[email protected]"): Zip file (duh) was attached.  Highly suspicious -

"You have a new eFax message. To view your message, see your fax attached or login here.

Fax Details
Caller Id:  559-812-4294
Received:  Wed, 08 Apr 2015 10:02:52 -0800
Type:  Attached in pdf
Number of pages:  3
Reference #:   atl_did9-IhNqKb_ZmxpFQG_jic4D2H6

With eFax, did you know you can:

• Send faxes from your desktop or mobile device
• Sign and edit faxes with no printing required
• Send large files by email (up to 1 GB)

Thank you for using eFax!

Sincerely,
The eFax Team"