scan now misses trojans

I've been getting one or two of these every day:

------------------------ < snip > ------------------------

From: Andrea Villarreal <VillarrealAndrea50786 @ porviajar . com . ar>

Dear person, ( where "person" is me )

We have received this documents from your bank, please review attached documents.

Yours sincerely,
Andrea Villarreal
Financial Manager

------------------------ < snip > ------------------------

It comes with an attachment.

payment_doc_266654.zip

It's OBVIOUSLY a virus or Trojan or some sort of malware.  OBVIOUSLY.

I was curious a couple of weeks ago and saved and scanned the files with my norton360 and it failed

to find anything even though it's obviously bad.

I uploaded it to https://www.virustotal.com/ .

Result:
------------------------ < snip > ------------------------

Post_Parcel_Confirmation_id00-151878815#.js

   JS/Locky.G!Camelot
   JS/TrojanDownloader.Nemucod.JF
   JS/Downloader.Agent

q.262024745.js

   JS/Locky.G!Camelot
   JS/TrojanDownloader.Nemucod.JF
   JS/Nemucod.dp  
   HEUR.JS.Trojan.b 

------------------------ < snip > ---------------------

Today, saved, scanned it again, Norton 360 says it's fine.

I attached the .zip to this post.