Rubbing noise on fridge side - ice build up behind lower panel

Evap fan is icing up will need to defrost before fan seizes and check for ice or debris blocking or in evap area

The fan noise is the sound of the fan blades hitting the ice build-up. Samsung now offers a larger aluminum heat sink (drain probe) for about $10 that can help prevent freezing of the drain hole on the fridge side. This will help keep your cooling coils and fins from freezing-up. You will need to unplug your fridge for 2-days with the doors open to give it time to completely melt any ice build-up. Then remove the shelves and drawers to open the inside back cover, as the new drain clip replaces the smaller existing one located at the bottom behind the back wall. The part is: Samsung Part# DA61-06796A Evaporator Drain Clip

The rubbing noise comes from your build up of ice. If no auto-de-icer, then unplug your fridge or turn it off, allow it to thaw, remove all dripping water. restart or replug

I use a shop vac to remove water.

be sure NOT to break, or chip the ice, as you may break freezer components