Yaoguai quills mutation.

[Rackdam]

I have a question regarding this sentence from the book :

Quills: A creature attacking the yaoguai with a melee weapon, an unarmed strike, or a natural weapon takes 1d8+7 points of piercing damage from the yaoguai’s quills. Melee weapons with reach do not endanger their users in this way.

If the player have multiple attack, does he take 1d8+7 damage for each of his attack?

Exemple : He have 4 attack, whatever the roll , he take 4x(1d8+7)?

[SlimGauge]

Reference: Yaoguai

I interpret that as 1d8+7 per attack. It doesn't matter if the attack is a hit or a miss, because it doesn't say "successful attack".