Accessing PDF without opening a new window

Hi, has the Highend template been designed to allow users to view PDFs without leaving the page that is directly linked to the PDF? For example, I’m using the “Portfolio Standard – 4 Columns” page, and would like to use it to showcase sample PDF documents instead of graphics (perhaps there’s a more appropriate page for doing this?). So I’d be uploading images (.pngs) of “title pages” of multi-page PDF documents in place of what’s there now (please see “Portfolio standard four columns.png” attached). From here, it would be great if the relevant PDF could be displayed within the window shown (please see the other file) and the user could navigate using some type of navigation arrow as shown in my image.

Thanks,
Robyn