It contains mining software. Good Mining software are used by botnets to earn money, so they are flagged with false positive hits on antivirus software.

If you want to read more about how the pill work, check the FAQ.

https://github.com/sp-hash/TheBlackPill/blob/main/faq.md

If you are unhappy with the windows version, try the Linux version. 0 hits on virustotal.

linux (ubuntu 18.04)
TheBlackPill_1804.tar.xz
https://www.virustotal.com/gui/file/3879b868a48fb5d2f53bb6acba11e8281ca7908186a3379c3b99510041d71f50?nocache=1