Web Form to PDF

The PDF that needs to be completely filled out is. <[login to view URL]> Step 1) Form is filled out by user. Step 2) When the user clicks submit a pop-up comes up that informs them they must digitally sign the document. They have two options, they can continue or click cancel. Step 3) The form data generates a pdf of the above link populated with the users data. Step 4) This PDFs are stored in a folders on my server. Step 5) This folder is made accessible only by username and password