Forensic Toolkit FTK Imager image file definition and linked programs information.
File extension ad1 is used by following file type(s):
|file type description:|
|Forensic Toolkit FTK Imager image file|
|The AD1 file extension is used by Forensic Toolkit (FTK) Imager.|
You can download the FTT imager (forensic toolkit) from here
You can get more information of the forensic toolkit in the wikipedia