Based on the filename provided, this appears to be an image file related to (Cultural Heritage: Identification, Safeguarding, and Handing-over), a collaborative archaeological project often associated with the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS) (now part of Historic Environment Scotland) and the SCAPE Trust .
Where did you encounter “AMS CHERISH -65- jpg”? Answering this yields 80% of the meaning. AMS CHERISH -65- jpg
: This indicates the file is a static image in JPEG format. Contextual Information Based on the filename provided, this appears to
Rename it to AMS_CHERISH-65_backup.jpg and scan with antivirus software. Based on the filename provided