Depends on the source of the PDF - which app was used to create this PDF.
What is inside this PDF - what are you trying to recover / recreate?
Can you post some screenshots?
Images - you rather won't get better quality than they are in the PDF already - unless they were not resampled down.
Texts - you could try going through Illustrator - or export from Acrobat.
If this PDF is bunch of images with text around - you could place this PDF as separate pages, cover original texts with white background - or whatever color there is - or just crop to the size of images - then add your own text - use a different layer.
Or you can use Google for 3rd party - paid - tools.