While many consider streaming from the archive "safe" in terms of malware, downloading copyrighted content without paying for it is technically illegal.
: A video critique on the Internet Archive that discusses the Blu-ray release and the film's production. Why These Papers are Noteworthy the karate kid 2010 internet archive full
While specific clips and related media for the 2010 film are available on the Internet Archive, the full feature-length movie is not officially hosted there for free public consumption due to copyright protections. Internet Archive Availability Informative post: "The Karate Kid (2010) — Internet
To watch the film in without legal guilt: The original animated series The Karate Kid (1989)