It’s not uncommon, just means one of the numerous processes to open a web-page hitched up with the JavaScript from one of these added advertisements and spawned a new instance trying to open up a redirect.
This redirect could simply be a ( usually betting ) webpage that fails, or malware. There’s even one called the Newtab virus ( although not a virus ) designed for Windows — but aren’t they all ?
Try uBlock Origin and Ghostery.
After a few years the top blocker place passes inevitably to an up-and-comer, as does everything, but Origin is right now. Ghostery I have some doubts on, very over-slick and seems complicated for it’s own sake if one bothers to fine-tune it; but it won’t hurt.
uBlock and Ghostery can actually screw with one another. I was experiencing some pretty bad browser slowdown on certain pages. I disabled Ghostery and added some extra tracking filters to uBlock. Running like a dream.
Bad luck, each set-up is different. Had no bother from either personally but I can well believe it.
What I like about Ghostery is its showing the different trackers: on this very page:
Advertising Trackers
AdBlade
DoubleClick
eXelate
Google Publisher Tags
gumgum
Quantcast
Rubicon
Taboola
VigLink
And 2 Site Analytics
ChartBeat
Google Analytics
Although I’ve seen up to 70 on a single page sometimes. And Taboola is the worst.
All but the last one is barred. However there could be a little story here…
As Consul Donaldus Exelatus followed Caesar over the Rubicon to their destiny, he hugged the native girl Gumgum he had rescued closer on his horse Doubleclick whilst munching the simple taboola and swigging the viglink his hosts had pressed on him; he heard Quantcast, his equerry swear as he analysed the sounds ahead. The Consul suddenly had his trusty adblade ready in his fist… “Be still, my charting heart, Gumgum, there’s treachery afoot !”
I was talking about the PTB here, not the ad provider.