It is important to note that It is completely outdated and no longer supported. Using such an old version, even the official one, would leave your system dangerously vulnerable. Modern antivirus software is designed to defend against threats that didn't even exist in 2011.
Cybersecurity experts have repeatedly documented how attackers modify legitimate software repacks to include malware, backdoors, or adware before distributing them through unofficial channels. This malicious code can: