How to load PDF only once link is pressed| Download button?

Hi all!
I'm having two questions regarding Embed PDF:
1). Could you suggest me a plugin which will show a Download button for uploaded pdfs?
2). Using this code

{pdf=http://your website.com/files/pdf/yourfile.pdf|500|300}

loads pdf once page is accessed. Is it possible to make a button inside an article which once pressed would load pdf? Otherwise - no
Thank you!