That's not how ads work on the internet. You have local advertising companies that are paid by Israel to push them based on whatever algorithm is held on you (and that's if Israel wants to use the algorithm or just blast the ad to everyone like they do on Google oftentimes).

Websites don't have a "country" unless it's specified at the domain level, but that's hardly an obstacle because a local domain or .com domain could be bought very easily.

Considering that this is a zero-click malware, it means that it just has to show up on the website you're using and has nothing to do with the originating country.

So do it. Get a list of the IP ranges assigned to Canada and whitelist them, block connections to all other IPs.

I do this with several of my websites. Either geofence or block non Canadian ips.

It's not perfect, but it keeps the spam away from me.