Help. nearby is a blacksih brown spider beside off-white dots? i have a blackish brown spider beside beige dots on its...

i have a blackish brown spider beside beige dots on its pay for that's on my window sill, it with the sole purpose comes out at night and i've tried to suck it up twice next to the vacume but the next darkness it come back.. i'm afraid to capture too close to it cause i don't know if its poisonous or not. if you come up to know what it is please let me know
appreciation:)