Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d4fa1c3b6f602a…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 20:57:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f22803573afe7af3f24ae26aa21990ef SHA-1: f37c36a8fe929289068eab3a0623fe989cce0bdc SHA-256: 03d4fa1c3b6f602ad3190c09d399750951f4e21396db7dec6f99b53c41f3ca12
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/how-to-get-free-unlimited-coins-in-coin-master-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hacks-for-case-clicker-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-roblox-shirt-maker_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-1-hundred-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/comandos-de-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/guuud-info-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-meep-city-roblox-money-2021-mac_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-bloxburg-free-release-date_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/get-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/robuxy-com-free-robux_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_off00002fe0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FE0 22820 bytes
SHA-256: 42562428e94a54a81dfe2f313ed39299408c24fe56bccb19d668517e9a05ceaa
font_01_sfnt_off0000633b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633B 18856 bytes
SHA-256: 2dd3f63cd5448f5fbece3b23266543376f477af7a872319e7351590eba77ed0d

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