From Pathfinder Lost Omens World Guide, which isn't enabled.

Shadow Haunted

BACKGROUND

Attribute Boosts Intelligence or Wisdom, free

Skills Intimidation, Shadow Plane Lore

Prerequisite Region - Old Cheliax

You are from Nidal, and regardless of your personal values, Zon-Kuthon has a claim on your soul due to an ancient pact. The Midnight Lord's unsettling influence is bred deep into your bones.

Choose two attribute boosts. One must be to Intelligence or Wisdom, and one is a free attribute boost.

You're trained in the Intimidation skill and the Shadow Plane Lore skill. You gain the Quick Coercion skill feat.

Pathfinder Lost Omens World GuideOGL