Noticed some of these for the first time yesterday just east of Camp Drybone farming clusters of Aldgoats. The characteristics:

1. Either Archer or Arcanist
2. All have a healing chocobo companion
3. Slowly rotate clockwise until they line up with a mob, at which point they start attacking
4. Casts 1 Cure on itself after the mob is dead, then repeat rotating

Also once they've locked on a mob they will attack it regardless of whether you've tagged it first or not. They also cannot deal with a mob being pulled behind their back, at which point they will freeze in place until the mob is dead.

It's a fairly obvious and easy to spot behavior pattern, hope SE will step up their bot surveillance in response and ban these bots where they pop up.