Zlib just made a windows app, but is it a ransomware

zlibrary on telegram is the official source behind the websit and they announced a windows app, i downloaded it and got only one threat: a ransomware, i know this is non worrying but someone on the community tab commented some gibberish that maybe indicate something

the virustotal link: www.virustotal.com/gui/file/…/community

btw bonus question: can files be flagged 0/60 and still have some kind of malware or virus ?