From publisher blurb:
In Space No One Can Hear You Scream ...
... that is not true of the void banshee. These spectral undead lure unsuspecting spacers to their doom by sending “distress signals” through the void. A void banshee likes to inspire fear, stealing small objects from living creatures, stirring up infighting, and causing paranoia before slaying its living victims.
Starfarer Adversaries: Void Banshee provides three stat-blocks (CR 3, CR 7, and CR 12).
Starfarer Adversaries: Because the vacuum of space doesn't kill you fast enough!