This used to work but not so much any more.The vector Dr had a thread that explains this process but I couldn't find it so here is a link;
How can I open a PDF in illustrator and convert text with a missing font into outlines
When I click the embed option the missing font message pops up and we are right back to square 1.
Agreed. First Aid definitely helps.I use Astute Graphics' Vector First Aid plug-in from time to time when importing PDF-based artwork. It's not a perfect solution, but it does cut way down on all the clipping mask objects and clipping groups. There will be less to look at and fix in the hierarchical objects tree within the layers panel.