The “bunny” aspect often refers to (like rabbits). The “brownie” is the lure (something desirable offered for free). The “cracked” is the entry vector (broken DRM hiding malicious code).
The seemingly nonsensical keyword “bunny brownie parasited cracked” is a perfect example of how language can combine completely separate, yet fascinating, concepts into a single phrase. It brings together: bunny brownie parasited cracked