Not exactly. It’s not like an image of them in peril or something. Just an ordinary photoshoot of them, usually smiling. But it’s so poor quality, think ‘high school graduation photo’ look, it’s not ‘last known photo’, more like ‘only known photo available before they died’
On a similar note, when you google search a first name and someone comes up with just their name and a random ordinary photo of them, no other sentence that tells them what they were/are (e.g. “American musician”)
That’s what gives it away that you know SOMETHING bad happened to the person.