Most "free crack tool" downloads are bundled with malicious software. Cybersecurity researchers have repeatedly found that tools like CrackTool4 often contain:

CrackTool4 is a piece of Windows software (often packaged as an .exe file) that has circulated in jailbreaking communities since the iOS 9 and iOS 11 eras. Unlike legitimate sideloading tools such as AltStore, SideStore, or Sideloadly, CrackTool4 is marketed as an "all-in-one cracker."