If you need help (without circumventing copyright), let me know the exact filmmaker or production company, and I can help you search above-board sources.
(Spirits of Darkness), which is how the feature film is often titled on Russian platforms. If looking for the short film specifically, search for Sombre na Alma Costa Rebelo Кинопоиск or information on where else to these films? Sombre na Alma (Short 2015) - IMDb sombra na alma 2015 ok.ru