To verify:
certutil -hashfile SL-K3300NR_Full_Driver_Win64.exe SHA256

If the official driver fails, consider these alternatives.

Samsung still hosts legacy drivers, but updates have ceased.

Download - Samsung K3300nr Printer Driver

To verify:
certutil -hashfile SL-K3300NR_Full_Driver_Win64.exe SHA256

If the official driver fails, consider these alternatives.

Samsung still hosts legacy drivers, but updates have ceased.