Why should we do this? Because a large amount of malware have protection against AV detection and cannot therefore be easily traced, but you yourself may establish it to be malware. Online here: http://scanner.novirusthanks.org there is an option to analyze the ASCII code of the .exe you scanned,
From your question and reaction I see you haven’t been there yet, because it says there in their disclaimer:
NoVirusThanks.org (NoVirusThanks Virus & Malware Scan Service) is not substitute for any antivirus software installed in a PC, [b]as it only scans individual files on demand[/b]. These results DO NOT guarantee the harmlessness of a file. Currently, there isn't any solution that offers a 100% effectiveness rate for detecting malware. You may be a victim of misleading advertising, if you buy such a product under those premises. This website DOES NOT compare Anti-Virus.
Got me… yeah, I did not go there ;D
Well, it requires upload the file and does not allow local scanning… I thought I’ll have an option and I realize I don’t have one.
I don’t know if having managed to identify and upload the file since it wouldn’t be running I really don’t know how it might hide its intent/purpose from Anubis.