Internal ONLY SecureMessage.zip malware seems to be on it's way...
Headers:

From: "Administrator" {Administrator@yourdomain.co.uk} Subject: Internal ONLY

Message body:

**********Important - Internal ONLY********** File Validity: 03/03/2015 Company : http://newburydata.co.uk File Format: Adobe Reader Legal Copyright: Adobe Corporation. Original Filename: Internal.pdf ********** Confidentiality Notice **********.

There's a Zip file attached to the email:

SecureMessage.zip

Inside the Zip file is a Windows Executable scr file:

Internal.exe.scr

SHA256 Hashes:

0e4acd1f408ce308cc3c0ac1d1ce7ed0da7002550a8acab5090330d71fa7ee2c  [1]

Malware Information:

VirusTotal Report [1] (hits 6/57 Virus Scanners) Malwr Report [1] Hybrid Analysis Report [1]

Cheers,

Steve
Sanesecurity.com