Place pork in a large lidded container. Combine pineapple juice, vinegar, orange juice, lime juice, onion, garlic, chipotle peppers, chili powder, cumin, salt, pepper, and sazon in a blender; blend until smooth. Pour sauce over the pork and make sure all chunks of meat are covered. Seal the container and marinate for at least 8 hours or up to 24 hours.