Try PitStop Pro. It's an indispensable tool for working with PDFs.
It is better than opening in Photoshop which rasterizes all the vector content & type in the PDF at a single resolution. Not a good idea.
Using Illustrator in a pinch can sometimes work, but can produce an awful mess if fonts are missing, creating hundreds of layers, etc. Not recommended.
PitShop Pro is designed for prepress and can check and fix so many different things while still maintaining the integrity of the PDF.
It has been around for years and it is the plug-in that you are looking for.