Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30670c02660face…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 06:57:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2c7c724f4b2f91fdb4149ed46ff09894 SHA-1: b58976f83f92a3848fcff9de9f8cc47b428b3fd0 SHA-256: c30670c02660face26a01f106df5895f60bd108cceffff95f05b41b593858f56
82 Risk Score

Malware Insights

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

This PDF document employs a common lure by promising game cheats and free spins for Coin Master. It contains a high-confidence heuristic indicating a link to a game hack redirector, which points to the malicious URL http://netcdn.tw/app/406889139/coin-master-cheats-for-free-spins-game-hack. The document's primary purpose is to trick users into visiting this URL, likely to download further malware or engage in phishing.

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-cheats-for-free-spins-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/best-free-robux-obby_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-fly-jump-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/i-got-hacked-playing-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/kids-get-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/code-for-roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-offers_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-de-roblox-para-todos-los-juegos_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_off00002f12.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F12 22984 bytes
SHA-256: e55d0705555e90c7e6f0d8e9fcfa9bb33a735d20763cde84c827fb53b61061f9
font_01_sfnt_off000062a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A6 18340 bytes
SHA-256: 5b574630ba63934687ba1c5d1198d52a4a38a7938149e8912a812ffc97b040e9

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