The piece on The Onion featured quotes purportedly from Neil Armstrong, the first man on the moon, stating that he realised he had been "living a lie" after reading conspiracy theories.
"The entire thing was filmed on a sound stage, most likely in New Mexico. I suppose it really was one small step for man, one giant lie for mankind," Armstrong was reported to have said.
The Daily Manab Zamin said: "The report has drawn a lot of attention. We've since learned that the fun site runs false and juicy reports based on a historic incident.
"The moon landing one was such a story, which received numerous hits on the internet. The truth is that Neil Armstrong never gave such an interview. It was made up. We are sorry for publishing the report without checking the information."
The associated editor of the country's New Nation paper, which also ran the story, told AFP: "We thought it was true so we printed it without checking. We didn't know The Onion was not a real news site."