Could you clarify what is in the "GrffHskrTscnWrlrd.rar" file (e.g., is it related to a game, a coding project, or an ARG)?
If this relates to a specific project, ARG (Alternate Reality Game), or digital content, so I can assist you in creating a guide.
This appears to be a heavily abbreviated or obscured file name.
Please ensure you know the source of this file before attempting to open it, as .rar files can contain malicious software.