The evaluation of the new method shows a detection rate of 99.2 %, without generating any false positives, when used to scan for JPEG data. The slowest implementation of the algorithm scans a 72.2 MB ...

Add the flag -% when using binwalk. Be patient. Waiting a few minutes for the result is to be expected. On my laptop the tool takes 25 seconds and 1 Gb of RAM to create the signatures for 70 ...