Batch file to Sort and Move specific files by identifying word inside

Hi All...
I will explain what I need in as much detail as possible.
I need a batch file to move specific files into a separate folder,possibly by opening my hex editor,searching for the word "body" ( without the quotes ) and if found ,close hex editor,move file to a folder called "moved" ,then go on to the next one.If the word "body" is not found just close hex editor and ignore the file.
I have approx 900 files in a folder.One is a vehicle and one is a map for a game.They are mixed together and the only way of telling them apart is by opening each one with my hex editor and search for the word "body",which means it is a vehicle.If the "body" word is not found,it is a map.Example wording of the files: mapname.idf carname.idf
Manually this process would take hours,even days.
It would be a lot better if there is a way of doing this without using the hex editor/batch idea.
Here is a link to one map and one vehicle file if needed for an example:
http://vnovak.com/1nsane/2idf-files.zip
Thanks a bunch for your help!
Val :)

insanefiles

Insanefiles folder has 900 dot idf ( .idf ) extension files with naturally a different prefix on each.Example > anyname1.idf and anyname2.idf
If opened with a hex editor and search for the word body , only the vehicle idf has that word inside that idf file.
I want a batch file I can place inside the insanefiles folder that can be run and detect the body word inside the idf files,then move all those idf files into a folder inside the insanefiles folder named moved.The idf files that did not have the body word inside would be left alone,because a map idf file does not have the word body inside the idf file.
Thanks!
Val

Thanks....I had to modify it like below and it worked but now I have a new problem.
A lot of these idf files have the word body with caps like Body or BODY and the code below just ignores those files.
How can I modify this code to make it NOT case sensitive?
Thanks again!

@echo off
md moved
for /f "eol=: delims=" %%F in ('findstr /m body *.idf') do @move "%%F" moved >nul
pause

Thanks Tookeri........

That worked liked a charm!
I appreciate it,both of you guys!

Val