That's a neat trick. I can imagine getting caught by this if I saw the link in non-ad context. The attackers made a smart choice here. Usual Unicode substitutions are something I've learned to spot, because the substituted letters look off, even if a tiny bit. But here? I didn't notice the dot under "k" even with an arrow pointing at it, because to me, it looked like a tiny speck of dust or dirt on the monitor. $deity knows I have many of those on my screen, and they're the kind of noise visual system is good at ignoring.