FUD means fully undetectable in script kiddie [1] lingo. Just go to BlackhatWorld and you will see all the Russian malware programmers advertising their "FUD trojan horse with undetectable stub"

[1]: script kiddies are people who can't program but who use hacker tools

Same here.. more LOC spent making silly menu than obfuscation (which does very little?). I’d be absolutely shocked if modern AV did not thwart this.