The file is the virtual disk image for a FortiGate Next-Generation Firewall (NGFW) designed to run on a KVM (Kernel-based Virtual Machine) hypervisor. This specific version, v7.4.7 , is part of the latest "mature" feature releases in Fortinet's FortiOS lifecycle. Official Download Method
: Once logged in, find the download section, and search for "FGT VM64 KVM-V7.4.7.M-Build2731-Fortinet.out.kvm.qcow2". You might need to specify your product type (in this case, FortiGate VM) and select the appropriate version. fgt-vm64-kvm-v7
If you need me to (PDF/Word style) for your organization warning about unofficial firmware downloads, or help you verify a legitimate file’s integrity, let me know. You might need to specify your product type
FortiGate VM64 KVM v7.4.7 Build 2731: Deployment & Download Guide find the download section