The following command (re)generates a pdf from the source file. In this particular case it is being invoked to fix improperly written pdf. but it could just as well be used to make a pdf from an jpg file.

gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.7 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile=Aaron_Taylor_APPLICATION_2014-04-30_20-58-new7.pdf Aaron_Taylor_APPLICATION_2014-04-30_20-58.pdf