Illustrator has basic support to import multi-page PDFs, with this PowerScript you get advanced multi-page PDF imports with a simple as drag and drop of one or more files, with the option of importing as linked or embedded content
Drag and drop files.
Multi-page Support.
Merge multiple PDF files and multiple pages into one document.
Select cropping for the imported PDF files, choose from Shapes, CropBox, MediaBox, TrimBox and ArtBox.
Import as linked or embedded.
Import at full size or scaled down.
Artboards are named to match the document name and page number.