Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6fa098481a074f6…

MALICIOUS

PDF

43.8 KB Created: 2021-06-04 02:49:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1c12486e17f85b8f681df4cf5f6bda7f SHA-1: bc1831d4480b5be00b85ebf8227dd23640c343e4 SHA-256: d6fa098481a074f6d6048d705f38c036442c28a79325fcfaabd74340139afb25
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack generator lure. The embedded URLs and document body text reinforce this, suggesting a social engineering tactic to drive users to a potentially malicious site. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

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/hacks-for-coin-master-game-game-hack PDF link annotation
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/getrobux-come_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-tiktok-free-fans_GM835599320.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_off00005282.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5282 24032 bytes
SHA-256: e020f2744a1b2eee4323e671bd8b213e37bec87d3f0c185facfb46f5e1b43eea
font_01_sfnt_off00008947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8947 18140 bytes
SHA-256: 4e94fb22fc4cfc45413f7acd937baf333ca1849990841083b3aad0aa05371929

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