Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fc66dc761f09852…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 08:36:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0eb2269e07b7efd37e3e7c4fa62d805d SHA-1: cf5ae94979caa717f72d71a7c29a7f7d832d86c0 SHA-256: 6fc66dc761f098529aece915b91fd7c6c627c7b0d378f6600daa34aab053dc3d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/coin-master-free-spins-link-2021-today-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/tiktok-free-80_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-images_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hacks-master-coin_GM406889139.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_off000050f5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F5 24600 bytes
SHA-256: 0bdd1ce4a5f48da0a8f0e5196fbb01de1ff93c85924755e0284aba95c5ee1950
font_01_sfnt_off00008864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8864 18812 bytes
SHA-256: 705c5903f824403b328e8e9dbd2ab52a650d097fc3c0d4bbd34be772086d041a

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