Wiki2LaTeX which uses its own parser. It is CPU intensive and might not render the pages in the same way than the WikiMedia parser.
PDF Writer and Collection. The PDF Writer can run standalone on a server and provide PDF generation for multiple MediaWiki instances. A server for public testing and low traffic Wikis runs at . It require Python and PHP to be installed with cURL.
WikiPDF can generate PDF/LaTeX document from a group of pages. It requires Python.
Look at alternative intermediate formats from which we can generate pdf (e.g. DocBook XML which can be generated by the XML Bridge extension).