What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You could indeed create a PDF fillable form, here's the guide where you will find the steps to do it: https://www.jotform.com/help/212-How-to-Create-a-PDF-Form
This other guide will also help you with more info about PDF forms: https://www.jotform.com/help/312-JotForm-Fillable-PDF-Creator-With-All-Points
If you need to send the PDF report from the submission to your user, then you only need to go to the form settings, emails section and edit the email notification, advanced tab and turn on the option to include the PDF attachment:
Hope this helps.