Use this script in Hazel to create a hotspot that makes tasks out of files in Omnifocus.

Omnifocus Hotspot.scpt

tell application "Finder" to set file_name to (name of theFile)
set theDate to current date
set theNote to "Imported on:" & (theDate as string) & "

"
set projectname to "Test Project"
 
set theTask to "Review File: " & file_name
 
tell application "OmniFocus"
	set task_title to theTask
	tell default document
		set newTask to make new inbox task with properties {name:task_title}
		set note of newTask to theNote
		tell the note of newTask
			make new file attachment with properties {file name:theFile, embedded:false}
		end tell
	end tell
end tell