Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c4169e2c9a5fc8…

MALICIOUS

PDF

44.7 KB Created: 2021-06-04 01:28:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0461af731c08fb81d027e7e0df3a78f4 SHA-1: bb848a42fc5b13ece60ccce76285fe5b0f0ae2fe SHA-256: 15c4169e2c9a5fc8f787a5d0c6623ea3270fc6d43d4e66ef7dacedeb3e49d44f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a game hack generator, which is a common lure for users to download malicious content or visit phishing sites. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple game-related lures reinforces this assessment. No scripts were extracted, but the document's structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content.

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/free-foxy-food-coin-master-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-for-kids_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/www-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spin-coin-master-game_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_off000050d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50D2 25980 bytes
SHA-256: 2c44081dbca55646cca85c604f1c26eb2c5531ed2c894cdc57de806c6f4d939e
font_01_sfnt_off00008c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C10 18272 bytes
SHA-256: 36b3b1238517c33c5efb2f434edc6a86fb2c27e62e92d06e943c1c1826ebc1e6

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