To deal with one single PDF document, you can use Preview to split PDF document into several PDF files on Mac OS X Lion.
Option 1: Split PDF by Pages on Mac with Preview
Users who use PDF frequently may often meet questions like this: “Is there any programming way to split PDF into pages, say one PDF file per page or specify page range to split PDF file?” or “Can I split a multiple-page PDF file into separate PDF pages/files.” In this article, I’ll introduce four options for you to split PDF documents by pages using a Mac.