Options for viewing a PDF file from native iOS Data object?

What options do I have to view a PDF file with CapacitorJS on iOS?

The file is stored encrypted in local iPhone storage, I get an iOS swift Data object after encryption (according to AI). I don’t want to save the file decrypted in local storage.

Can I open the Data natively in a “viewport” with a native PDF viewer, still keeping my CapacitorJS menu bars on top and bottom in place?

Or do I need to move the Data into the CapacitorJS Javascript part and view it with browser (iFrame) or use a library like pdf.js?

Which options work, what are the pros and cons?