That would be normal
It’s AdManager but it explains it well:
In an effort to provide clear choice and information to users about the ads they see, ads that appear on certain sites on the Google Display Network show an advertising icon notice such as an “AdChoices” or “Ads by Google” icon. There is no choice to opt-out of the in-ads notice icon.
AdChoices is an industry standard icon that expands to when users move their cursor over the icon. When users click the icon, they go to a page hosted by Google which contains text specified by the IAB, the Ads Settings –where they can control the types of ads (for example, Arts & Entertainment or Travel) they see on the Google Display Network, and to the youronlinechoices page–a guide to online behavioral advertising and online privacy.