Version 3.5.0 is an iteration of an app designed to recover data from iPhones and iPads by analyzing backups or scanning the device directly.
This signifies the file was modified by "Team TNT" (or TNT), a long-standing group in the warez scene known for bypassing license protections on macOS software. Omni_Recover_3.5.0_[TNT].dmg
Downloading and installing cracked files like this carries significant security and legal risks: Version 3