Look in your antivirus protection history to see if the file was blocked and restore it if you trust the source.
The is a classic symptom of an overzealous antivirus removing a crack file. The solution is straightforward: restore the file from quarantine, reapply the crack, or (best of all) purchase a legitimate DRM-free copy from GOG. file buddha.dll hitman absolution
Place the file directly into the (where the game's executable .exe is located). Look in your antivirus protection history to see