Attachments in ISR - Adobe forms

Hi,

I need to attach a doc to the pdf (isr) at the portal level and then submit it to the approvers. please suggest how to accomplish it..

At present, we are able to trigger an event on clicking a button and get the file name...

Kindly suggest how we can save this doc as a whole and pass it through the workflow.

Kindly help.

any helpful pointers or solutions will be appreciated.

Rgds,

Anto