At first, you should tell us what kind of operate system you have used. OSX or window. If you use OSX, the external app Preview supports exporting PDF file to Jpg. Due to you have 65 pages, but it seems the Preview just support convert 1 page. The other choice is Cisdem PDFConverterOCR which is support exporting PDF file to different kind of format picture. It could handle scanned PDF too.
The external app Photoing supports PDF. It works from Mac or Windows. It supports multiple files. The external app PDF Converter works on Mac, Windows and Linux. It supports the export PDF file to various formats, including JPEG and PNG. The external app Adobe Extol supports PDF. It supports the export PDF file from image files. If you can't find it right away, check the Adobe website or use the tool online. This should help, so you can upload the image file to Preview, and then export PDF with the help of Photoing, which you listed above.