Is there the ability to add a widget for attachments?

Is there the ability to add a widget for attachments?
For example, a job application that requires a resume included.

Hi,

Yes, it is possible. You can add a file upload field on the PDF forms, and receive uploaded files from persons filling out your form.

Please see our guide on how to add the upload field on the form:
How-to-create-file-upload-forms

Let us know if you have any further questions, and we are happy to help!