Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d399ec53292dad2…

MALICIOUS

PDF

46.2 KB Created: 2021-05-30 17:42:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f04e551a93b8132a6a1b9e7a5a66d416 SHA-1: ba9647b053b5783d4c3b1ab14f1cd632f3ff01d3 SHA-256: 8d399ec53292dad2c15967fee199784fa6c87fd0b2147618d1e6ce4ef139d151
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, identified as a link farm, promoting free game hacks and bots. The ML classifier strongly indicates maliciousness. The document body and extracted URLs suggest a lure to download potentially malicious content or engage in phishing activities. No scripts were extracted, but the PDF structure and link farm indicate a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9544

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.xyz/app/835599320/free-tiktok-bots-game-hack
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-24-7-minecraft-server_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/coin-master-free-spins-promo-code_GM406889139.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-tiktok-comments_GM835599320.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/is-minecraft-bedrock-edition-free_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-free-robux-for-kids_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/robux-hack-me_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/minecraft-free-download_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-spins-coin-master-app_GM406889139.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-human-verification_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/tiktok-minecraft-hacks_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/daily-free-spins-for-coin-master_GM406889139.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-robux-exe_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/minecraft-story-mode-free_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-do-u-get-free-robux-2021_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-tiktok-followers-no-downloads_GM835599320.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spins_GM406889139.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-minecraft-codes_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/minecraft-online-free-no-download_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/robux-com-free_GM431946152.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-hack-a-minecraft-server_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/is-minecraft-free-on-nintendo-switch_GM479516143.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/free-tiktok-video_GM835599320.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-play-minecraft-for-free_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/minecraft-name-tag-hacks_GM479516143.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000539e.bin
e5a1d4be6c17b2a2c376793b3dd679dbd86d3375edba8fdf0866e5704fc0ed38
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x539E 27964 bytes
font_01_sfnt_off000093d4.bin
83a0af7587fde9e4cb54786aef6824729efdfe72bd6282daf62b8eaca0103fce
pdf-font-stream PDF embedded font (sfnt) at offset 0x93D4 17672 bytes