Malicious PDF — malware analysis report

Static analysis result for SHA-256 a94fce76b9ec8b49…

MALICIOUS

PDF

35.4 KB Created: 2021-06-23 08:36:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fe93a8037a2525cc94083b68b0b728b4 SHA-1: ab9778dc7be5a2414285c8b3a1f8c2c14d9c30e8 SHA-256: a94fce76b9ec8b499dee7e98d319c9ca3f52c714d29d0a6d5983a8c9ad0ac2b7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The document body and heuristics indicate it directs users to external websites, likely to download further malware or engage in phishing. The ML classifier strongly flagged this PDF as malicious, supporting the observed redirection behavior.

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.co/app/431946152/free-roblox-code-generator-no-human-verification-game-hack PDF link annotation
    • http://perpus.polbitrada.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-robux-hack-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/whats-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/hack-robar-cuentas-de-roblox-2021-pastebin-akaka_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/getbucks-free-roblox-website-game_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/roblox-how-to-get-elite-game-pass-free_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
font_00_sfnt_off00003221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3221 22240 bytes
SHA-256: ccf8af113de9b4d772f93abacb945f2fef8efcf5ae1016f40b8b547d80fa7e94
font_01_sfnt_off000063d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D6 19584 bytes
SHA-256: cf9dd05c8fc848c562e682e38fc8797d90526cf51eb3c5a13e570a261e6f39b9

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