A: Upload the file to VirusTotal. If only 1–2 obscure engines flag it, it is likely a false positive due to the packer used. If more than 5 engines detect malware, delete the file immediately and find another source.
S = Move selected pixels, M = Move whole layer, F7 = Show Layers window, Ctr+Shift+Z = Redo. Paint.NET 3.5.10 Final Portable.zip
: Compatible with a massive library of community-created effects and file type plugins. A: Upload the file to VirusTotal
The file should be roughly 1.8–2.0 MB. If you download a 200KB file, it is likely malware. M = Move whole layer