One month before a purported leak of files from Hunter Biden’s laptop, a fake “intelligence” document about him went viral on the right-wing internet, asserting an elaborate conspiracy theory involving former Vice President Joe Biden’s son and business in China.

That document, a 64-page composition that was later disseminated by close associates of President Donald Trump, appears to be the work of a fake “intelligence firm” called Typhoon Investigations, according to researchers and public documents.

The author of the document, a self-identified Swiss security analyst named Martin Aspen, is a fabricated identity, according to analysis by disinformation researchers, who also concluded that Aspen’s profile picture was created with an artificial intelligence face generator. The intelligence firm that Aspen lists as his previous employer told NBC News that no one by that name had ever worked for their company, and no one by that name lives in Switzerland, according to public records and social media searches.