JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
If you want to only upload the files, you can use one of your forms, for example, this one: http://www.jotform.us/form/50258537922156 and submit them.
Then in your submissions screen you'll be able to retrieve the links of the uploaded files.
Or, if you want to embed a pdf file in your form then you can use the PDF embedder widget.
Hope this answers your question.
Let us know if you need further assistance.