No, I'm probably wrong.
So far, Mura hasn't used any sort of syntax. The output from Mura would not tell us the syntax of the language, as you can pretty much output anything from any language that has a "print" command.
He/she/it has simply searched posts for specific keyphrases, such as the various codes we've cracked thus far, and the surrounding content doesn't seem to matter.
Another thing, why does Mura's status say "A real human being"?