Using a Hex Editor , you can look at the first few bytes of the file. If it starts with 7z , it is a valid archive; the subsequent bytes might reveal the original filenames or software that created it.
Internal data blocks used by software like Git or Docker to store historical changes. 029314a66a124a55b616357dd2e7de5516546023.7z
Many modern games use hashes to name their internal data packs to prevent file conflicts. Using a Hex Editor , you can look
Automated cloud backup services often rename files to hashes before uploading for security and organization. How to Identify the Actual Content If you have this file and need to know what is inside: Using a Hex Editor