How is this related to InDesign?
You cannot edit a PDF document in InDesign. If you're using Acrobat Pro, I can send your question to one of the Acrobat forums if you like.
Anything could help
I'll take that as an affirmative answer. Moving your question to the Editing & Exporting PDF forum.
Those font names are indicative of a PDF file that was created possibly using bitmap fonts and very likely not from any Adobe application. Those ‘F’ names don't correspond to names of any real fonts, but were artificially generated by whatever created the PDF files.
Bottom line: The fonts are probably already embedded as bitmaps, but you can't edit with them as editing text in Acrobat requires that the font be actually installed on your system. There is no way of directly knowing what the original fonts are/were and thus, no way of licensing them and subsequently downloading and installing them on your system.
If possible, you should go back to whatever the source document is for the PDF file and edit that. One long-shot would be to try to export the PDF file in Acrobat Pro to Word and see whether there is anything there that is usable.
Sorry, but this type of oddball PDF file is probably one of the most difficult types to do anything much with in Acrobat due to the nature of how it was created and the font assets used.