Thank you for enlightened me, but the original project of this game only released in itch.io and Patreon. So, another site is not official.
Ok well that means somehow a virus made its way into the game without Github, if the creator used any code he found online or something similar it might have been the source. Either way it needs to be removed as the current official build does seem to have a virus in it which will be infecting the computers of those who download it.