Is there a way to insert a PDF file in thank you page?

on the thank you page, is it possible to insert a pdf file?

Your form is currently set to redirect to another page where the PDF file is linked for download. This should work. You can also add the link in the default thank you page.

Note that you can also attach a file in the autoresponder email. You may consider adding the file there as well:

Let us know if you have further questions.