In the future, a good idea is to upload suspicious files that you’re allowed to share to https://www.virustotal.com/
That will scan it with the 50-60 participating virus scanners (if you get something like 1-6 matches and they report it as a heuristic match, then you can be reasonably sure it’s a false positive) and make it available to the virus scanner companies for use in tuning future versions to be more accurate.