Origami is a Ruby framework designed to parse, analyze, and forge PDF documents. This is NOT a PDF rendering library. It aims at providing a scripting tool to generate and analyze malicious PDF files. As well, it can be used to create on-the-fly customized PDFs, or to inject code into already existing documents.

Download
Origami uses the Mercurial repository that can be accessed with this command:
hg clone https://origami-pdf.googlecode.com/hg/ origami