Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff264bd522757d2…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 22:14:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8944988a166ea0c5a3295d1ff9ae8940 SHA-1: 3599747db40278d5ca16c781e1311b42d9db9cb7 SHA-256: 7ff264bd522757d24325cfc25b41a9fd7bf04c2fee5e446287cec4c2a687eb62
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and a heuristic firing indicating a game hack lure. The document body, though partially corrupted, also contains references to game hacks and URLs. The primary URL, http://netcdn.tw/app/406889139/coin-master-hack-app-game-hack, is likely the initial landing page for a malicious download or exploit.

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/coin-master-hack-app-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-le-bote-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-on-roblox-2021-real_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-wall-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-gift-card-generator_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_off00003369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3369 23112 bytes
SHA-256: 1a9a38508f64e2e35a06f61183efb03e2c5a23008b31d4a10d9a89ee0041d8c9
font_01_sfnt_off0000677a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677A 18180 bytes
SHA-256: 5b637a8a036eab97bffff91a515cae84fc40b6bddd589e778cc2e69a12b03167

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