Hi Arman
What do you mean by download link ? if your asset is residing under /content/dam/downloads/name/name.pdf , then if you give
<a href="https://forums.adobe.com/content/dam/downloads/name/name.pdf"> Click here </a> will open the PDF for you .
To download PDF , you may have to write a separate logic because usually all browsers give you an option to save the PDF to you local.
Thanks
Veena