I just repeated your experiment: With my ad blocker disabled, I searched for "google chrome" on DDG. I got two ads above the search results; one was for google.com, and the second was for downloadsem.com, which is distributing a Chrome browser that comes with a lot of browser toolbars. I took screen shots. [1]
Of note is that these ads are powered by, and clicks redirect through, Yahoo.
Of note is that these ads are powered by, and clicks redirect through, Yahoo.
[1]: Screen shots for the curious: https://www.dropbox.com/sh/jiooo37trog860d/AAAgmpY9SMxcLyIVI...