Want PDF attachment with submitted form details in the final Signed E-mail

We have created a Webform by uploading a PDF and added a Signature block to the webform.

On submitting the website , it asks for Verify of EMail Address send on an email id provided along with the SIgnature.

Once email address is verified , a email is send with a body content having a URL which contains the form details submiited by user along with signature.

We need to send email with the PDF attachment with the submitted form details  & signature.

Is it poosible OOTB or can it be achieved via API integration.