In a large bowl, combine the vegetable oil, red wine vinegar, aji panca paste, minced garlic, ground cumin, paprika, dried oregano, salt, and black pepper.
Add the meat cubes to the marinade and toss to coat evenly.
Cover the bowl and refrigerate for at least 2 hours, or overnight for best results.
Preheat a grill or grill pan to medium-high heat.
Thread the marinated meat cubes onto the soaked wooden skewers, packing them closely together.
Place the skewers on the hot grill and cook, turning occasionally, for about 8-10 minutes, or until the meat is cooked to your desired level of doneness.
For extra flavor, you can brush the meat with additional marinade while grilling.
Enjoy your meal!