I'm on 16.04 and would like to view two different sections of the same PDF in the same window. I know it is possible to open several instances of PDF viewer but that's rather annoying.
I've tried Foxit, Evince, Okular... and several others. It seems that none of them seem to offer this feature in Ubuntu. A bit of googling suggests Konqueror but I wasn't able to get it to work either...
The answer lies, as you have suspected, in Konqueror which has an option under:
I attach a screenshot demonstrating this on my own system: