Malware spam: "Colin Fox [colin@nofss.co.uk]" / "Invoice 519658"

This spam is not from Norwich Office Supplies but is instead a simple forgery. They have not been hacked (even if their website says they have).

From:    Colin Fox [colin@nofss.co.uk]
Date:    24 April 2015 at 09:40
Subject:    Invoice 519658

Please find Invoice 519658     attached 

The attachment is Sales Invoice 519658.pdf [VT 2/57] This spam drops the Dridex banking trojan, but unlike other recent runs the attachment is a PDF file rather than an Office document. In fact, the PDF file contains a script that generates and drops a Word document named 6.doc [Malwr report, Payload Security report] [VT 4/55] which in turn contains a malicious macro that looks like this [pastebin].

There may be different versions of the macro, but in this case it downloads a component from:

http://bepminhchi.com/83/61.exe

..which is saved as %TEMP%\pierre6.exe. This binary has a detection rate of 4/57 and automated analysis tools [1] [2] [3] show an attempted network connection to:

185.12.95.191 (RuWeb CJSC, Russia)
149.154.64.70 (TheFirst-RU, Russia)
78.24.218.186 (TheFirst-RU, Russia)
89.28.83.228 (StarNet SRL, Moldova)

In addition, the Malwr report says that it drops a Dridex DLL with a detection rate of 4/57.

Recommended blocklist:
185.12.95.191
149.154.64.70
78.24.218.186
89.28.83.228

Sample MD5s:
da26ed1b6fe69d15a400b3bc70001918
b37ea697df790121e4dda35d8ba172c3
0ea69ef635257be03043a3f70f013475
29471c1aabae10d205f474a3299486ec