This is a macOS disk image. If you are on a Windows or Android device, this file cannot run, but its presence suggests a targeted attempt at Mac systems. Associated Risks
Legitimate software rarely includes "Downloader" in the actual filename of a disk image ( .dmg ). This usually indicates a stub installer that, once opened, downloads and installs additional (often malicious) payloads. spring blossom 2020 - Downloader.dmg
Hidden background processes that track your browsing habits. This is a macOS disk image
Inspect your browser (Safari/Chrome/Firefox) for any extensions you don't recognize and remove them. this file cannot run