Probably a transparent ad. Also fuck those types of ads (fake download shit).

I also have Adblock off (obviously).

the banner you see is just a simple background that pops up after like 3 seconds

normally the ad loads within that timeframe overlaps it

in this case the ad loaded but because the shady advertiser wanted to trick people into clicking shit the ad was made to be transparent to blend in and pass off as actual content

can't you filter who wants to advertise on your website, e?

at least the favicon doesn't look like Articuno any more