This specific file name string appears to be an internal, scrambled identifier or a for a version of the GoodNotes 5 application ( .ipa file) designed for iOS 14+ on 64-bit devices [1].
Be careful downloading .ipa files from unofficial sources, as they can sometimes contain malware. This specific file name string appears to be
Syncing capabilities via iCloud across iPad, iPhone, and Mac [1]. etc.) [1]. Extensive tools to import
Laser pointer tool for presenting notes via screen mirroring [1]. and sign PDF documents [1].
Automatic shaping tool to draw perfect circles, squares, and lines [1].
Ability to create unlimited notebooks with custom covers and templates (dotted, lined, graph, etc.) [1].
Extensive tools to import, annotate, and sign PDF documents [1].