Not OP. It seems they're files which display different contents depending on the program you open them in. Here's a CCC talk on it: https://media.ccc.de/v/MRMC

Not OP. It seems they're files which display different contents depending on the program you open them in. Here's a CCC talk on it: https://media.ccc.de/v/MRMCD2014_-_6008_-_en_-_grossbaustelle_ber_-_201409051930_-_schizophrenic_files_-_ange_albertini https://media.ccc.de/v/MRMCD2014_-_6008_-_en_-_grossbaustell... And the slies from the talk: https://www.slideshare.net/ange4771/schizophrenic-files-v2 https://www.slideshare.net/ange4771/schizophrenic-files-v2