A .dmg file is a type of file used on macOS systems to mount a disk image, which can contain the installer or the software itself.
If the $299 price tag of Final Cut Pro is out of reach, you do not need to resort to illegal downloads. Excellent, legal alternatives exist for every budget. Apple’s Free Trial finalcutpro10410dmg cracked
The Hidden Dangers of Downloading "finalcutpro10410dmg cracked" disconnect from the internet
The Risks of Downloading Final Cut Pro 10.4.10 DMG Cracked Versions run a trusted antivirus/anti-malware scan
If you suspect an infection, disconnect from the internet, run a trusted antivirus/anti-malware scan, and consider backing up your essential files and performing a clean macOS reinstallation to be safe.