Malawi is located in Southeastern Africa. Although they played in a Quidditch World Cup final, there is no mention of Quidditch in their Wikipedia entry (Wikipedia).
From the Web
Writing by J.K. Rowling on Pottermore:
Pottermore enhanced reading experience: Quidditch World Cup
Screenshots of the original Daily Prophet coverage of the 2014 Quidditch World Cup on Pottermore: Imgur web archive
Harry Potter Wiki: Malawian National Quidditch Team