The propaganda is circulating via messaging apps and it shows posters of Santa Claus on his knees with his hands bound and a militant standing behind him in what appears to be London's Regent Street.
In another poster there are images of landmarks such as the Eiffel Tower in Paris during Christmas time with dark terrorist images, including a hand holding a bloody knife.
The images were intercepted a few days ago by BlackOps Cyber, a dark web intelligence agency, the Epoch Times reported.
The images also include phrase “soon on your holidays” in English, German and French.
The latest threats come after six Syrians were detained on Tuesday for allegedly planning an attack using weapons or explosives in Germany.
The suspects, aged between 20 and 28, were arrested by German police during raids in the cities of Kassel, Hanover, Essen and Leipzig, the general prosecutor's office in Frankfurt said in a statement.
The attack was planned on a Christmas market and those held were arrested at a refugee camp, according to reports.
