Malware spam: "Hector Malvido [handyman1181@hotmail.com]" / "Pending payment"

This spam comes with a malicious attachment:

From:    Hector Malvido [handyman1181@hotmail.com]
Date:    20 April 2015 at 10:51
Subject:    Pending payment

This invoice shows in my records that has not being pay can you review your records please

Attached is a file filename-1.doc (3/57 detection by AV vendors) which may come in many different versions, but the samples I have all have this malicious macro [pastebin] which downloads another component from the following location:

http://kafilahgroup.com/55/55.exe

This is saved as %TEMP%\grant8i.exe and has a VirusTotal detection rate of 5/57. Automated analysis tools [1] [2] [3] [4] show it phoning home to:

89.28.83.228 (StarNet SLR, Moldova)

The Malwr report shows that it drops a Dridex DLL with a 3/57 detection rate.

Recommended blocklist:
89.28.83.228

MD5s:
673626be5ea81360f526a378355e3431
7ca6884ad8900797c7f0efaaabe0c0da
8c0661aefa9aa25d8fddf2a95297e04e