Using unsupported software means you won't receive security updates. Always scan files downloaded from community-contributed archives. The Verdict
The Internet Archive is generally safe, but user-uploaded software is scanned only by ClamAV (an open-source antivirus) which misses many modern threats. adobe illustrator cs6 archive.org
While the search for might yield a downloadable file, getting it to work on a modern computer is a different story. Using unsupported software means you won't receive security