REBI-Shoveler must be easily overlooked as it's very unusual to go to a search engine and type in the user agent and get no authoritative hit from any bot hunter whatsoever. There were tons of hits from various web stat pages but nothing I could easily find that gave me any clue what in the hell this thing was.
With this little information all I knew was it came from Korea, otherwise I was stumped:
18.104.22.168 "REBI-Shoveler v0.1"Finally I decided to see if I could find any more clues in the several years of bot tracking archive files I keep and sure enough, there was a single original hit on my server that contained the answer I was looking for:
22.214.171.124This bot operates out of multiple IPs in the range of 116.122.36.* and here's a little translation for you from their site about REBI, but not mention about robots.txt nor did it ask for the file when it visited my site today, so it's behaving badly.
"REBI-Shoveler/RS Ver. -100.0 (REBI's great worker ... ; http://rebi.co.kr; firstname.lastname@example.org)"
Now you know who REBI is that's shoveling shit off of your server.