Write a about someone trying to find this "cursed" file.
The demand for "South Movies" (Tollywood/Kollywood) has exploded.
Often, the "movie" is just a 2GB file of static or a different film.
This subject line looks like a classic "clickbait" trap found on pirate sites or in spam folders. If you were to write a paper about it, the most interesting angle would be an analysis of digital piracy culture and the psychology of search-driven titles.
Adding a file extension builds false trust.