Petr, if you're still checking here,
While searching for something else I came across Jungle Warriors
. The synopsis seems to fit the movie you describe: "A group of models fly into the jungle of some South American country to look for a photo location. Their plane is shot down and they are captured by a drug baron's private army. At the same time, the Mafia's representative arrive to negotiate future collaboration."
The Spanish title was "La Guerreros de la jungla." Close enough?