i've downloaded, extracted, installed, executed. I didn't have any problems or signs of infection. Also, my trend micro office scan didn't complain at all.
Password Cracker : A tool to decrypt a password or password file. PestPatrol uses the term both for programs that take an algorithmic approach to cracking, as well as those that use brute force with a password cracking word list. Password crackers have legitimate uses by security administrators, who want to find weak passwords in order to change them and improve system security.