This is possible with a very easy setup. Simply create a primary object then add Attachment as a related object. After you choose it, two Salesforce required fields should be listed. Map the Body Salesforce field on the left with PDF Submissions on the right.
Submit the form and look for the PDF file in the Notes & Attachments object, related to your primary Salesforce object.
Here is a list of the most frequently asked questions. For more FAQs, please browse through the FAQs page.