You've likely found a digital breadcrumb for a pirated movie, game, or software package that is trying to hide from the "internet police."
To avoid automated copyright filters. If a file is named "Latest_Blockbuster_Movie.mp4," it gets flagged and deleted instantly. If it’s named a random string of gibberish, it stays up longer. 73L58B8S848GR84A8394CC.part4.rar
Do you remember you saw this review? Knowing the website might help solve the mystery of what's actually hidden in that file! You've likely found a digital breadcrumb for a