Websites like The Pirate Bay, 1337x, and YTS often host a wide range of movies, including "Malena." You can search for "Malena dublado" (which means "Malena dubbed" in Portuguese) or use the language filter if available.
A torrent is only good if it downloads. Look for files with . torrents malena dublado best
Rather than risking malware on torrent sites, you can find the film on several major platforms. Note that availability can vary by region. Websites like The Pirate Bay, 1337x, and YTS