Please read this first!
Always be careful when installing any 3rd party software, I personally haven't experienced anything bad with the windows 8 patcher. I've carried this version of the patcher since Windows 8.1 was still supported a long time ago and I currently use Windows 8.1 in a virtual machine, essentially as a video player for my anime and disconnected from the internet.
Here is a virus scan from VirusTotal.