Files with long, encoded strings in the name often come from "warez" sites. These can sometimes contain injected malware or trackers.

Open AltStore on the phone, go to the "My Apps" tab, tap the icon, and select the IPA file to install it using your Apple ID. Sideloadly:

The string you provided appears to be a specific filename for an (an iOS application package), likely sourced from a third-party archive or a "cracked" app repository.

Sideloading usually requires your Apple ID credentials to sign the app. It is highly recommended to use a "burner" or secondary Apple ID rather than your primary account for this purpose.

The app is a "Universal" binary (works on iPhone and iPad) and is optimized for 64-bit processors.