Does this look exploited to you?

I was wandering through my log files and saw this failed http request:

/fluxbuntu/xf0j/t/x1b/x16/v+/xf0j/t/x1b/x14(-/xf0

That looks like escaped hex or something to me. Except the j's, don't get where they fit in. Anyway, Google gave me nothing, so I suppose it's just an oddity I'll never know about.