I think this belongs into the ATM section...

And for a short answer, no. At least in standard theories, dark matter is (you are correct in this) non-baryonic matter which intereacts only gravitationally with other matter.

But you make it sound like the black hole can only exert gravitational influence on its surroundings if it is made of some kind of non-baryonic dark matter. While it IS correct that a black hole is a baryonic-to-non-baryonic matter converter (there's nothing baryonic about a black hole anymore, stuff like baryon and lepton numbers disappear), the event horizon prevents us from getting any information out of a hole. And it still has a gravity well (a veeeeery deep one...) because static fields, like gravity or an electric field, penetrate the event horizon. It's the only stuff that can.

__________________
David Alexander Kann
PhD student
Thueringer Landessternwarte Tautenburg

Ignite our minds and let's burn brighter
These are the wonders at your feet
- Dark Tranquillity, The Wonders At Your Feet