Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4fa81a9bbcae09…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 05:35:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ebf734699fba848d7459acd3c4a4dce6 SHA-1: 4754117290a49db0377c2958b4a122dae781a90f SHA-256: ea4fa81a9bbcae093987536530dd665c822a191621621d060ff301c0c71bcd97
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-games-download-free-game-hack PDF link annotation
    • http://library.umuslim.ac.id//repository/can-pokemon-go-free-account_GM1094591345.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/tiktok-free-followers-apk_GM835599320.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/pokemon-go-free-coins-ios_GM1094591345.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-often-pubg-uc-advance_GM1330123889.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/add-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-hack-without-human-verification-2021_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_off00004fcd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FCD 24440 bytes
SHA-256: 35ac392d2257725849cba3ea51b49b7650cba758d3d838425cceae974b55b714
font_01_sfnt_off000087a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A4 18548 bytes
SHA-256: bf0010eea28238cadeb536793d42f80382de1e22dde51f6e5fd1d23f73abc266

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