So my sister got a broken attachment so I did a little internet searching and found this to decode it
Save the file as a .mim and then use a right click decode.
java -jar SignPDF.jar
Another cool one is this c# project that uses itextsharp located here http://www.codeproject.com/useritems/Esignature.asp
Another is this great open source sourceforge project, http://sourceforge.net/projects/portablesigner/
in a jiffy this portable signer is probably the fastest!