Exactly
It's cultural not religious. You will find it in specific nations or communities like Jordan or Pakistan. I double dare anyone to bring me a Quran verse or a hadith that allows "honor" killings
Surah Al-Kahf (The Cave) 18 of the Quran. Read aya 60-80. In these verses Moses is with another man. In verse 74, they come across a young man and the man with Moses kills him. Moses questions why but doesn't get an answer until verse 80. This is verse 80 (3 translations):
018.080
YUSUFALI: "As for the youth, his parents were people of Faith, and we feared that he would grieve them by obstinate rebellion and ingratitude (to Allah and man).
PICKTHAL: And as for the lad, his parents were believers and we feared lest he should oppress them by rebellion and disbelief.
SHAKIR: And as for the boy, his parents were believers and we feared lest he should make disobedience and ingratitude to come upon them:
The lad was killed to save the parents, the family, their honor and standing with Allah.
Your thougths?