MN 2 lists examples of uwwiseunwise attention:
What are the things unfit for attention that he attends to? They are things such that when he attends to them, the unarisen taint of sensual desire arises in him and the arisen taint of sensual desire increases, the unarisen taint of being arises in him and the arisen taint of being increases, the unarisen taint of ignorance arises in him and the arisen taint of ignorance increases. These are the things unfit for attention that he attends to. MN 2
MN 19 provides a clear example about how wise reflection/attention is used to develop the path.
As I abided thus, diligent, ardent and resolute, a thought of sensual desire arose in me. I understood thus: ‘This thought of sensual desire has arisen in me. This leads to my own affliction, to others’ affliction and to the affliction of both; it obstructs wisdom, causes difficulties and leads away from Nibbāna.’
When I considered: ‘This leads to my own affliction,’ it subsided in me; when I considered: ‘This leads to others’ affliction,’ it subsided in me; when I considered: ‘This leads to the affliction of both,’ it subsided in me; when I considered: ‘This obstructs wisdom, causes difficulties, and leads away from Nibbāna,’ it subsided in me. Whenever a thought of sensual desire arose in me, I abandoned it, removed it, did away with it.