Downloading this file constitutes software piracy, which is illegal in many jurisdictions and denies revenue to the developers (BioWare) and publisher (EA).
.part06.rar indicates this is the sixth volume of a multi-part compressed archive. Because the game is large (around 100 GB), it is split into smaller parts for easier uploading and downloading. Functional Context Mass_Effect_Legendary_Edition-FLT.part06.rar
FLT (FairLight), a long-standing group known for cracking and releasing PC games. Downloading this file constitutes software piracy, which is
Files from unofficial sources (torrents or "repack" sites) are frequently used to distribute trojans, miners, or ransomware. If you are trying to fix a broken
Typically, a "complete report" for a scene release would include a check. If you are trying to fix a broken download, you should look for the .sfv file included with the release to verify that your part06 matches the original exactly. Recommendation
If part06.rar is corrupted or even one byte is missing, the entire extraction of the 100 GB game will fail with a "CRC Checksum Error."