pdf file

Hi,
is it possible to create a pdf popup window? I have created a popup but only a link of my pdf appears in the popup window which when I click, a new tab with my pdf opens. which code do I have to put in the popup? this one is not working:
Zmluva o spracúvaní osobných údajov
nor this one:
<pdf src=”mywebsite.org/wp-content/uploads/2019/07/Zmluva-o-spracúvaní-osobných-údajov.pdf” alt=”” width=”205″ height=”544″ class=”alignnone size-large” />