Even if the core repack is clean, many download sites wrap the file in a custom installer that asks you to "decline" toolbars. If you click too fast, you will end up with Browser hijackers (like Search Marquis or Trovi).
Instead of chasing the latest repack, consider these options: idm+repack+by+elchupacabra+new
If the security risks of idm repack by elchupacabra new make you nervous, consider these legal alternatives: Even if the core repack is clean, many