This is the most common outcome. You download the 10MB RAR or ZIP file. You try to extract it, and suddenly the file expands to 3GB. "Aha!" you think, "It really was compressed!"
Cybercriminals know that desperate users searching for "highly compressed" software are often trying to bypass security or licensing. The 10MB file is usually a virus, trojan, or ransomware disguised as a Windows installer. Common payloads include: Windows 7 Ultimate 64 Bit Highly Compressed 10mb