Most "index of" servers today are not friendly archivists. They are hackers running unpatched versions of Apache or Nginx. Downloading a video file is generally safe (MKV/MP4 containers rarely contain executable viruses), but the site itself might force a fake "codec installer" (.exe file) disguised as the movie.
Naina lives in a close-knit Indian-American household in New York with her father, who struggles to balance work and emotional support, and her younger sister Jennifer, who is happy and spontaneous. Naina is focused on her MBA and frequently anxious about her future and appearances. She is comforted by Rohit, her devoted friend and neighbor, who has quietly loved her for years.
Aman arrives in the neighborhood as a new tenant upstairs. With boundless charm and humor, he befriends Rohit and Naina almost instantly. His warmth and zest for life gradually chip away at Naina’s guarded exterior. He organizes small joys—impromptu gatherings, music, and laughter—that bring color back into her life.
The short answer: No.
While the "index of" search trick is fascinating from a cybersecurity and archival standpoint, it is not worth the risk for a single movie. Kal Ho Naa Ho is not a rare, lost film. It is a blockbuster that is widely available.
Performing such a search and accessing results may lead to: