Someone who plays the block game known as "minecraft". Most people who get the nickname Malfas are named this way because they are usually nerds who play UHC Champions on the hypixel network.

People are also named this way if they are absolute cunts who suck dick all day.
by Wistaf February 12, 2018
Get a malfas mug for your mate Bob.
A female cheif.
The woman in charge in the relationship.

The chief
Justin: Nicole is the Malfa!
by Gemini19833 August 05, 2021
Get a Malfa mug for your brother-in-law Manafort.