rapid7/metasploit-framework — pull request #345 by alech (2012-04-19 19:00:38+00:00)
Title: pdf2xdp.rb script to convert PDF file to XDP format

XDP is an equivalent format for PDF, but is pretty useful in evading AV
software.

See
https://www.metasploit.com/redmine/issues/3679
http://shiftordie.de/blog/2011/02/09/evading-avs-using-the-xml-data-package-xdp-format/