Well, I finally got around to doing this. Sad to see Freemake Video Converter go, that was a really useful tool.
pdfforge couldn't be removed, it wasn't found in the appdata directory or something (I made screenshots, in case this is important)
I also sat on my rooftop again to do a Malwarebytes scan just for good measure, which found no threats.
The FRST tool required a restart, after which I noticed changes in Chrome. I now have to re-install Lastpass, which will be a pain, since I don't remember my Lastpass-password. I wrote it down, but I don't have it where I now live. See how that works out.
While I was logging in to the avast forum, having only two tabs open in Chrome, my laptop overheated and shut down.
So it seems both myself and my laptop have a nasty infection with irony.
It now seems to be doing okay, still running quite hot, still with ten Chrome processes clogging things up with only two tabs open. I think I'll soon switch browser, not sure yet to what (firefox perhaps, after I reinstall it).
I think I'll also let a professional look at the hardware in order to give it a proper clean and cooling paste fix.
Or get a new laptop somewhere.
Please see the the attached fixlog.txt and thanks again for the help!