Zero-acquaintance personality judgments
A zero-acquaintance situation requires a perceiver to make a judgment about a target with whom the perceiver has had no prior social interaction. These judgments can be made using a variety of cues, including brief interactions with the target, video recordings of the target, photographs of the target, and observations of the target's personal environments, among others.
Source: Wikipedia — Zero-acquaintance personality judgments (CC BY-SA 4.0)