infected is the industry standard password for malware samples
Yes
Check the file type using the file command and rename the file extention accordingly
No, sorry
No. If you have a file name or checksum, then malwr.com is a much better alternative than our site.
Successfully running malware is a tricky business. There is no standard road to success. Do your research, it's worth it.
Probably not. But to be honest, we don't know. All we do is gather all sorts malware automatically and that can be anything.
No. There's a good reason to why you should figure that stuff out on your own.