Windows 10: Trojan.Gen.NPE false positive?

Earlier tonight I accidentally opened a link and did my usual, I decided to scan my PC with Nortons anti-virus. It came back saying a Trojan.Gen.NPE had been found in a PDF file and was removed. Problem is, I legitimately do not know where this PDF file came from. I do not see any downloads for it, I don't even know when/where it came from, but it was found in a microsoft.windowscommunicationsapp folder. I took a screenshot of the file in question. Any idea if this is a false positive or a real threat? The other Details tab said that many users used this and it was released over a month ago. I

:)

 

False Positive - Rundas!plick Trojan

We have a small "exe" that we use extensively at "Return to Misty Moorings" This is for our "Season Switcher". When the program is run, the software is quarantined as a Rundas!plick Trojan. There is no Trojan or any other problem with this software, Malwarebytes
and Spybot both show it does not have a problem. But every time our users try it with Defender, it is "quarantined". This is giving our site and our efforts for our fans a bad name from Microsoft's false positive. The program can be found at:

http://return.mistymoorings.com/faq/#s

The "solution" from the Microsoft "help" chat was to "Turn off Windows Defender". That we can do and I can tell my thousands of followers on the site that this is Microsoft's suggestion (not a very good marketing idea). We need someone on the Defenders
team to get our software "CLEARED" so this does not keep showing up as a Rundas!plick Trojan.

Please tell us who to contact or what needs to be done next.

Doug Linn/RTMM

 

database of malware producing false positives or false negatives

Many months ago I communicated with Malwarebytes about a trojan that was detected by Defender that was not detected by Malwarebytes. They indicated that Microsoft Defender is likely a false positive and to wait weeks or months for Microsoft to update their
database. To date the Defender continues to detect a trojan that is not detected by Malwarebytes.

Defender does not detect any malware on quick scans. However on full scans it detects this trojan that is not detected by Malwarebytes.

How does an end user determine whether one antivirus program is producing false positives or false negatives?

 

Avast: False Positive Much?

Take a read here CD, it seems OK, Avast giving a false positive -

http://csd.dficlub.org/forum/showthread.php?t=1525