Hello, it's a false positive. We are aware of it, but we can't do anything about it.
Steam support also notified us about it and let us into the store. 
https://www.virustotal.com/gui/file/287f06db6eb91214e0edacd11873a64e894e90061f38...
It might be a good idea to have some sort of disclaimer on the game-page so people see it front and center that it may flag their antivirus :3
(Also sorry if my initial comment caused any issues, I wasn't sure how to convey it without making it look like I was intentionally being rude or critical or something!)