Default [Q] Artifact on camera?

Hi,

I guess this is a kind of unique problem, so I decided to start a new topic.

The problem is, I've been noticing something weird showing up on my photos. Every time it could be explained as a some weird looking shadow (we all know it looks like a bent penis)

Well, I thought there's a small piece of hair (or dust, whatever) under my camera glass so I cleaned it, but the thing I didn't want to see - the artifact is still there.

Do you think it can be solved in an other way than buying a new camera? It's not ROM or camera app releated for sure.

Thank you

This is an image of how does it look when I make a photo of a white paper.
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