Adblock Master has been removed from the App Store.
You may not understand some of the geek in this, but the end of the video explains why you were getting ads.
Thor Lite has been removed from the App Store also so MB got rid of it. Thor doesn't find anything but tries to get people to buy it.
Linky with video. In the video in the link it shows Genieo junk at the end, is it like what you had?
Genieo was a big problem. They bundle their adware with a lot stuff. You have to watch any "free" installer very carefully. That came from some installer offering to make your life easier.
I use MPlayerX. You have to watch the tricky installer though. MB wants to delete the app because of the nature of the shady installer but the player is safe once installed, it plays almost anything. If it won't VLC will.
That was just a PSA on video playback, but the point is a lot of app installers get tricky like MPlayerX. If you watch the installer video below you'll see that there are both a Skip button and a Continue button each malicious step. We are trained to think Skip means stop the installation so we hit Continue without reading the fine print.