The p7zip port of 7-Zip is several releases behind and the project seems to be abandoned. I discovered this when a large archive failed to extract with Engrampa which uses it. It reported a "Headers Error" which is due to a compatibility problem between zip format implementations. 7-Zip has a fix but the port doesn't. But there's a fork on GitHub which is being actively maintained. Check it out. Source: over 2 years ago

I use Engrampa. Which archive format I use depends on the use case. For example, if Windows users are involved, I usually use Rar archives. Under Linux, I usually use tar.xz. Source: about 3 years ago

Well, the file probably is packed with VMProtect to prevent reverse engineering, so it is not a false alarm per se, but given that it is likely a legitimate file that has used the packer for legitimate reasons, it probably should not be detected. Source: almost 2 years ago