Malicious PDF — malware analysis report

Static analysis result for SHA-256 268338cf82ef026e…

MALICIOUS

PDF

33.0 KB Created: 2021-07-04 00:33:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: efb17bc74458fca14a79a68160e0b669 SHA-1: 08eed6d644f109fb4414ff82e9d0dad994ae4a58 SHA-256: 268338cf82ef026e0f42de2dfccbe820c71ae068ec0ce1f685d1cd55b9032348
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 0.9980

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 http://netcdn.tw/app/406889139/descargar-coin-master-hack-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/how-to-get-robux-with-cheat-engine-62_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-gift-cards-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/get-free-builders-club-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-gainer_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-at-roblox-speed-race_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-for-ninja-legends-roblox-download_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/claim-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-on-a-laptop-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-verification_GM431946152.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_002_off00002ca5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CA5 22440 bytes
SHA-256: 76cbc62acb9d793dadcfb36f755e2f1320f6426d6b8f81d022ce94fc4f47a124
font_01_sfnt_off00005e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9D 18172 bytes
SHA-256: 1789a8ba000f32d0cf379c807bdab686f3556df5b196f2a4d6102c9c21830956

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