This is a specific tag often associated with Eastern European digital repositories or specific "uploade" groups. These groups often "brand" their file names so their collections can be easily searched across different platforms.
Ensuring that no part of a collection is missing.
If you are researching digital archives, use a secure browser or a virtual machine to prevent unwanted scripts from running. Final Thoughts
A file labeled .jpg.exe is not an image; it’s a program, and likely a virus.