Dominik Szoboszlai scored with two brilliant strikes while Emil Forsberg and Andre Silva got on the score sheet to complete the drubbing.
The pre-season friendlies for Liverpool start with two 30-minute fixtures against FC Wacker Innsbruck and VfB Stuttgart.
The Congolese striker has confirmed he has been playing under a false name and age and his real identity is Silas Katompa Mvumpa.