Is this the "official" version?

Virutotal report: https://www.virustotal.com/gui/file/31e71e18ac53ab0d0cbd4c252d03474f832521eb52c137e0136060974a2e50f0?nocache=1

5 average

Windows and mac files can be found at https://github.com/moshfeu/y2mp3/releases/latest. It's critical to have the latest version because youtube site changes frequently

7 good