If you are using a Mac, you can use built-in tools to see what the file actually contains, regardless of its extension:
: Used for legacy 3D animations in older video games, originally developed by Electronic Arts. Apple.anom
: Open Terminal and type file followed by a space, then drag the file into the window. This uses a "magic test" to look at the signature bytes at the start of the file to determine its true format. If you are using a Mac, you can
: Before attempting to open it, scan the file with a trusted security tool. Show or hide filename extensions on Mac - Apple Support If you are using a Mac