Hi!
This is not a Maya file (.ma or .mb), if it was at any time a Maya scene it is now so heavily corrupted that there is no way to restore any information.
There is no way to recover anything from this file.
To prevent data loss like this:
1. Do incremental saves (as often as suitable) and from time to time save or export in an additional format (like FBX or OBJ).
2. Delete history if not needed anymore (on individual or all objects).
3. Create backups.