SiteSucker is a "web crawler" application. It automatically copies every page, image, and PDF from a website to your local storage by following every link it finds. It's often used by developers, researchers, or people who want to browse a site without an internet connection.
This specific file string appears to be a for SiteSucker, a popular tool used to download entire websites for offline viewing.
Based on the naming convention (v5.x, 64-bit, OS14.2), this is likely intended for or sideloading via tools like AltStore or Sideloadly. What is SiteSucker?
If your device is jailbroken, you can use AppSync Unified to install the IPA directly via Filza.
Downloading .ipa files from "user-hidden" or third-party "BFI" sources is risky. These files can be injected with malware or spyware that activates once sideloaded onto your iPhone or iPad.