Malware spam: "Jen [Jen@purple-office.com]" / "Documents from Purple Office - IN00003993"

These fake financial documents have a malicious attachment:

From:    Jen [Jen@purple-office.com]
Date:    15 August 2016 at 14:10
Subject:    Documents from Purple Office - IN00003993

Please find attached invoice/credit from Purple Office.

Best regards,

Purple Office 

Attached is a randomly-named DOCM file which is almost definitely a variant of Locky ransomware as seen here and here.