Embed PDF into company's application view of candidate

We would quite like to have a candidate's CV embedded beneath their "current application" section on their profile when viewed from a company perspective. In the past there were tools like pdf.js to achieve this but we were reluctant to introduce these. However, we now we believe browser support for PDFs to be good enough that we can simply use an iframe instead. This should only be shown if the document is in the PDF format!

Steps to get to this screen:

• Follow instructions to set up app from here
• Click 'Login'
• Login as company@example.com
• Hover 'Jobs' and click 'All live Applications'
• Click 'Candidate User' on the application beneath 'Junior Maker of Everything'

Please don't hesitate to ask questions here.