Malicious PDF — malware analysis report

Static analysis result for SHA-256 f889c292d3701565…

MALICIOUS

PDF

32.0 KB Created: 2021-06-07 08:59:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f84f23260e629c574d71623c6edbfda9 SHA-1: 3f5549e803bad9de31093c998d4a1fdee3cd4294 SHA-256: f889c292d370156531d5776537822848c77583f7b5ff847f434859e1b890dee3
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. These links appear to be part of a link farm designed to attract users with promises of free in-game items and hacks for popular games like Roblox and Minecraft. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of this PDF. The primary attack pattern involves directing users to potentially malicious websites through these embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.tw/app/431946152/free-vip-games-on-roblox-game-hack
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-robux-december-hack-2021_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-game-card-codes-roblox-2021_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/best-free-minecraft-server-hosting_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-robux-games-that-actually-work_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-a-free-minecraft-server_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-490-robux-for-free_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/minecraft-free-trial_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/roblox-is-there-any-hacks-that-avast-antivirus-allows_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/give-me-free-robux_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-roblox-jump-exploiut_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/meepcity-roblox-hack-menu_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/cheat-roblox-fly_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/roblox-high-school-how-to-fly-for-free_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-robux-gift-card-codes_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/coin-master-free-spin-codes_GM406889139.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/roblox-how-to-noclip-with-cheat-engine_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-robux-giveaway-groups_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-robux-2021-legit-feb-unpatched-instantly-no-wait_GM431946152.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005439.bin
f4408f30ea9915f70ad3b8b1f70030cd70cbb75efce6c475c2f41e278b0217d4
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5439 17169 bytes