From Pathfinder Adventure: Rusthenge, which isn't enabled.

Rust Zombie

CREATURE 1

MEDIUM EVIL MINDLESS UNDEAD UNHOLY ZOMBIE

Plague zombies are infested with hideous contagions.

A zombie's only desire is to consume the living. Unthinking and ever-shambling harbingers of death, zombies stop only when they're destroyed.

Perception +3; darkvision

Skills Athletics +7

Str +4, Dex -2, Con +3, Int -5, Wis +0, Cha -2

Slow

A zombie is permanently Slowed 1 and can't use reactions.

AC 13; Fort +6, Ref +3, Will +4

HP 50, void healing; Immunities bleed, death effects, disease, paralyzed, poison, unconscious; Weaknesses vitality 10, slashing 10

Void Healing

A creature with void healing draws health from void energy rather than vitality energy. It is damaged by vitality damage and is not healed by vitality healing effects. It does not take void damage, and it is healed by void effects that heal undead.

Speed 25 feet

Melee Fist +9 (unarmed), Damage 1d8+4 bludgeoning plus Grab plus Rust Creep

Melee Jaws +9 (unarmed), Damage 1d12+4 piercing plus Rust Creep

Requirements The zombie has a creature Grabbed or Restrained.

Rust Creep (disease, divine)

Those afflicted by rust creep develop uncomfortable rust-colored bruises on their flesh and endure full-body aches like those one might experience after a long workout. As the affliction progresses, their bodies—as well as the clothing and items they wear or carry—increasingly break down until a painful death occurs. If a character successfully resists contracting rust creep, or recovers from a case of rust creep, they are temporarily immune to future rust creep infections for 24 hours.

Saving Throw DC 15 Fortitude

Stage 1 –1 status penalty to Athletics checks (1 day)

Stage 2 as stage 1 (1 day)

Stage 3 Enfeebled 1 (1 day)

Stage 4 enfeebled 1 and Stupefied 1, plus any armor, clothing and items you carry and that are of a level equal to or less than the disease become broken as the decay spreads to them (1 day; broken items remain broken)

Stage 5 Unconscious (1 day)

Stage 6 unconscious (1 day)

Stage 7 death

Grab

Requirements The monster's last action was a successful Strike that lists Grab in its damage entry, or the monster has a creature Grabbed or Restrained

Effect If used after a Strike, the monster attempts to Grapple the creature using the body part it attacked with. This attempt neither applies nor counts toward the creature's multiple attack penalty.

The monster can instead use Grab and choose one creature it's grabbing or restraining with an appendage that has Grab to automatically extend that condition to the end of the monster's next turn.

Pathfinder Adventure: RusthengeOGL