**6. SHA and MD5 checksum**

If you are working with a file that has a large file size, SHA or MD5 checksum can be very useful in checking for malware. Many online tools can do this for you, or you can use a hex editor to calculate and compare the checksum for the file in the image. You'll need to download the file from the source and check the file size, then download the file from your image and check the file size to compare the two. If there is a difference in the file size, you may want to investigate further. If you are working with a smaller file, it may be easier to use a hex editor to view and compare the file directly.
