File conversion from PDF (multiple pages) to importing into Pro

I’m new- I don’t have any background in using any type of CAD. I have tried to find th answer but to no avail. I am on a Mac. I have Pro. I want to take a PDF that has 5 pages and convert it to DXF. Can someone explain step by step on how to import the docs and convert from 2D to 3D

Cheers