Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b7f9b9d46376f2…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 23:32:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 24214ad133ab94feef7e1306ef4cfbfd SHA-1: 79a27c441a1e3a837a3ce30bb7be1de6ddaf5436 SHA-256: 72b7f9b9d46376f2e675ff7da28695e9b4f260e2618f9b20db24a1228cd536e2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic indicating it links to a game hack generator, which is a common lure for malicious redirects. The embedded URL 'http://netcdn.tw/app/406889139/hack-coin-master-ios-game-hack' likely leads to a phishing or malware download site. While no scripts were explicitly extracted, the nature of the lure and the ML classification strongly suggest malicious intent.

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/hack-coin-master-ios-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-wings-promo-code-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-man-face-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-unlimited-money-hack-jailbreak_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-hack-robux-2021-no-download_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/make-free-roblox-shirts_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-codes-2021-android_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-800-robux-for-free-nov-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-hack-apk-android-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/rbx-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
font_00_sfnt_off00002fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB5 22924 bytes
SHA-256: 2235784d30eb76583ecce9bc16173761f60ce1f7ffee992fef656baed92b039b
font_01_sfnt_off000062c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C8 18004 bytes
SHA-256: 4c5d9a824de2dea5cf38432e93a74275512ca3d1de6f9bfc3d674cd23e8e42bc

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