That doesn't appear to be a valid link. Try building `file` from source and using the provided default magic database.
You could try this for yourself using the same APKPure file which I uploaded at the following alternative link[1]. Further, while this could be a corrupt APK, I can’t see any signs of that from a cursory inspection as both the `classes.dex` and `META-INF` directory are present, and this is APKPure’s own APK, instead of an APK contributed for an app contributed by a third-party.