If the hash does not match a known-good value (search Apple support forums for current hashes), discard the file.
The standard macOS installer is an .app bundle. To make a bootable ISO for VMs or USB: macos high sierra 10.13 iso download
If High Sierra appears, download it with: If the hash does not match a known-good
hdiutil create -o /tmp/HighSierra -size 6000m -volname HighSierra -layout SPUD -fs HFS+J macos high sierra 10.13 iso download
Contrary to popular belief, most Mac users do not need an ISO file. Apple distributes macOS as a .app (application) bundle via the Mac App Store or as a .dmg disk image. So why is the ISO format so highly sought after?