Maybe reveal an ancient deep space creature is actually anchored to the rear exterior of the ship having leeched all the power as its bacterial symbiotes cleansed the interior of any life in a manner that resonates strongly with the dark side but only once they're inside the ship after all if they're force sensitive would you risk scavenging something radiating evil?
So they board the ship end up having to repower parts of the ship waking the creature and in turn its symbiotes leading an initial fight but as long they didn't directly connect their ship to the derelict to repower they have a way off the ship... they didn't... uh oh...
Imagine their reaction discovering that the derelict appears to be partly organic after a while searching the interior then notice there's passageways sloping downwards now why does it look like a throat?