Catchers obstruction?????

[PABlue]

I researched everything I could find going through the old threads and could find nothing that helped me in this situation.

Fed baseball: Pitch to the batter with runner stealing from first. Catcher reaches out, never leaving the catchers box, and receives the pitch over the middle of home plate. Batter does not attempt to swing,I have a strike call, throw goes to second with a safe call given on the steal.

My question is this,do we need a swing or a attempt to hit the pitch for obstruction to be called on the catcher? Should some other call be made that I am not thinking of? Is this nothing?

I spent over a hour last night going through my rule and case book and could not find anything specific. I'm thinking that means I was right in not calling anything except the pitch,or that I'm a very bad researcher.