Downloading macOS installers from torrent sites or random blogs is dangerous. Here is why an source (like a direct Apple certificate link or a verified Developer Transfer) matters:
Where is the DMG? After running the command, the system creates a hidden .dmg -like mount. The actual installer app will appear in /Applications . Right-click it > Show Package Contents > Contents/SharedSupport/ InstallESD.dmg — that is the exclusive recovery DMG used for creating USBs. download macos high sierra 1012 dmg exclusive
[Insert download link]