There reads: This name uses Spanish naming customs: the first or paternal family name is Diaz and the second or maternal family name is Pettersson. 
 However, that is not true since "Early life" section says: Malin was born to Swedish man Thomas Pettersson and Claudia Díaz, who had moved to Sweden from Chile aged eight after the 1973 coup d'état in her home country. 
 Therefore, paternal family name is "Pettersson" and maternal family name is "Díaz". Swedish wikipedia has the names also in that order, so the normal Spanish naming template does not fit here.