You can be banned virtually for anything, with or w/o using any 3rd party software, its all on blizz side to look at logs or not, to double-check your point after appeal, or just answer politely.
About the ban chances, yea, GB2 or dungeons spam could bring faster ban than anything else, and if you are using Lazyraider you could be out of bans for years.
But still the player reports stand - they can get you in troubles, if you dont use with caution the botbase.