It is from a well-regarded source, widely-used. However, both me and a friend are getting an IDP.Generic alarm, particularly when running the .bat in \gmt6\share\doc\examples\ex01 (of the windows 64 installation). The file blamed is \gmt6\bin\gmt.exe, which passes both local scan and virustotal scan (https://www.virustotal.com/gui/file/f70e276b6e2827fa84bd2e82b849eaf353b0680081b68bb1673348a6ecc2592d) in a vacuum. The issue only appears on runtime!
The alert ID is 5e2b72de8c1d/2022-07-12T08:11:03.351Z
Wait for a final verdict by avast team, as it comes with their definitions. ‘IDP generic’ means that the detection was performed by an Identity Protection detection component of your antivirus and it is a generalized file that got detected. It is an identification used by av-vendors to denote a identity theft program (executable), as IDP stands for Identity Detection Protection. But as said also by Pondus, you should wait for a final answer from the horse’s mouth, that is an avast team member.