Rar files with names like this are common vectors for Trojan horses or ransomware .
Based on the available information, is associated with a long-running internet mystery or "alternate reality" style file hunt. Because these files are often distributed through unverified channels, they generally carry high security risks rather than actual media content. File Overview C00lD4dy part2.rar
Recommend that actually have documented content. Rar files with names like this are common