From https://gist.github.com/mipmip/5975066

InDesign_Make Document

-- tell application "InDesignServer"
tell application "Adobe InDesign CS3"
  set myDocument to make document
  
	tell myDocument
		tell page 1
			set myTextFrame to make text frame
			set geometric bounds of myTextFrame to {"6p", "6p", "18p", "18p"}
			set contents of myTextFrame to "Hello World!"
		end tell
	end tell
	
	set myFilepath to my unix2MacPath("/Volumes/DupaData/Users/pimsnel/myTempFile.indd")
	
	export myDocument format PDF type to my unix2MacPath("/Volumes/DupaData/Users/pimsnel/myTempFile.pdf")
	
	set myDocument to save myDocument to myFilepath
	close myDocument
end tell
 
set myResult to myFilepath
 
on unix2MacPath(pathin)
	set tmppath to pathin
	set returnValue to (POSIX file tmppath) as string
	return returnValue
end unix2MacPath
 
on mac2UnixPath(pathin)
	set tmppath to pathin
	set returnValue to POSIX path of tmppath
	return returnValue
end mac2UnixPath