Alas, that was not to be the tool is designed to be run like PRODISCOVER BASIC 8.2 DOWNLOAD PDF Which would give STDOUT (or could be redirected to a text file, for instance). I tried against a single file, and that worked fine. I tried to use my limited Windows CLI knowledge and get it to feed the PDFs to pdfinfo, with no joy. If I was in Linux, I would've been more comfortable with creating a loop to go through the files and feed a variable (ie, the file) to pdfinfo.
I messed around with looping in Windows a bit, but - another piece of the scenario - is that time was limited (of course!).
In the process of trying to work out the loops, I looked at some posts on Commandline Kung Fu and other similar (well, similar, but less awesome, no doubt) sites. I may have had some syntax error or other minor issue that caused trouble, but I couldn't ever seem to get a loop to work, and just didn't have time to keep at it.