Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf096d51d4cfeff…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 10:35:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: eaf9dd451213e8b61e212598c6f38ccf SHA-1: cb2e17dc6bdf9680b2034ff904414a8276803ee5 SHA-256: eaf096d51d4cfeff246c839af78b7b9b2d58bacd7a56d35a2e400e66b0eddf6f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and directs users to the URL 'https://netcdn.online/app/406889139/www-coin-master-game-hack'. This URL is likely intended to download and execute a second-stage payload. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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.online/app/406889139/www-coin-master-game-hack PDF link annotation
    • http://lib.stie-aub.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005031.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5031 25304 bytes
SHA-256: 1126eb293274f1fefd6c9345b47359d59fb7e2f09c11358cd3aac74dce5bf328
font_01_sfnt_off00008a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A88 17908 bytes
SHA-256: 6f31903e710e2f0fcec5102e216c8b2505ef46bc9ceeb62cc07342564c5c8e6e

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