It's not giving me a URL, it just appears as an image file when I try to copy or share it to get a link. Not sure if anything in the attached image helps at all, seems to be the best I can do.
After not getting one for months, I got another one of these ads, for Coca-Cola, with a much larger border than usual. Bizarrely, the ad didn't lead to anything when I clicked on it, just a blank page: data:image/gif;base64,R0lGODlhAQABAPAAAAAAAAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==