Random clicking and static sounds in my recordings, no hardware issues.

I am recording some vocals with Adobe Audition in multitrack, but each recording has these random annoying sounds like someone hot the mic with their fingernails. They occur randomly from recording to recording. I have no idea why is this happening, I am far away from the mic, and the volume level is always in the green, with no clipping. I tried recording with Garageband and there are no such sounds at all! 

Any help on what this could be? Thank you!