Instead of the software, the file usually contains Malware, Adware, or Ransomware . The Risks Involved
A website promising a free "Pro" version of a tool (like Splash Pro, a high-performance video player) with a working serial key or a "crack" executable.
Pirated software is modified by unknown parties. These modifications often lead to frequent crashes, blue screens, and permanent corruption of your operating system. A Safer Path