Old forum attachments or data hoards from sites that used automated naming conventions in the early 2010s.
When you see "part2.rar," it means the original data was so large it had to be "sliced" into smaller pieces. This is a common practice for: sc20390-fh5updv1444438-part2-rar
High-definition video renders or raw footage for production. Old forum attachments or data hoards from sites
Automated system backups where the filename is generated by the backup software. sc20390-fh5updv1444438-part2-rar