The PDF printer does not support the back-to-front page order option in the Windows printing dialog. However, if you are printing to PDF and need to print the pages from back to front, you can reverse the page order by running an additional tool after the PDF is created.
After successfully creating the PDF, you can configure the PDF printer to run a command line. Therefore, you can find a command line tool online to reverse your page order and run it after the PDF is created.