i refreshed your page a few times and i found a text ad similar to the one in your pic with the same probleem

the ad says


Unclaimed Money - Free Trial Search
Over 3 Billion in unclaimed money is sitting unclaimed in our database. How much of it belongs to you? Find out a... Yes Advertise Here

there are spyware that can replace your site ads with tailored ones made from your surfing habits. These ads are usually hosted on other infected machines lol