exiftool

Possibilidade de coleta de informações via metadatas dos arquivos, podendo identificar softwares que geraram determinado arquivo, sistema operacional e até mesmo o nome de usuário.

$ exiftool bitcoin.pdf
ExifTool Version Number         : 13.25
File Name                       : bitcoin.pdf
Directory                       : .
File Size                       : 184 kB
File Modification Date/Time     : 2025:06:11 18:15:50-04:00
File Access Date/Time           : 2025:08:14 13:18:09-04:00
File Inode Change Date/Time     : 2025:08:14 13:17:47-04:00
File Permissions                : -rw-rw-r--
File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.4
Linearized                      : No
Page Count                      : 9
Language                        : en-GB
Creator                         : Writer
Producer                        : OpenOffice.org 2.4
Create Date                     : 2009:03:24 11:33:15-06:00