I'd be pretty suspicious, but generally with AEFW you'll see areas with lots of little circular/oval bite marks at the edges of tissue dying off. I don't see any bites like that.
I always break the corals like this off the base, inspect both the plug and the base of the coral for eggs, and then dip in bayer. Since the bayer is cloudy I always pour the dip liquid into a clear container and look up into the light to check for AEFWs.
At this point personally I'll put the frags in QT, but for a small frag like this there really isn't much place for the AEFW to hide. A proper dip will kill all the live ones and a small frag like this is pretty easy to fully examine for eggs (though get that plug off, AEFW love laying the eggs at the base where they are really hard to see).