Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ccb486e6345d54…

MALICIOUS

PDF

45.0 KB Created: 2021-05-11 07:21:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 852733005e3adb91985cacdf45f3bd01 SHA-1: 3147109d33da52151d1674e3d08494551e4f2858 SHA-256: 84ccb486e6345d544a885a867cbd95634103bd00da90fcd6560cd1f39d60cdeb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack generator lure. The primary URL, https://netcdn.xyz/app/406889139/coin-master-generator-hack-game-hack, is embedded within the document and likely serves as the initial point of compromise. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering tactic to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.xyz/app/406889139/coin-master-generator-hack-game-hack PDF link annotation
    • http://ebook.itn.ac.id/repository/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004943.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4943 25176 bytes
SHA-256: bd9e1a46ce6f7a8d7f79fa584d0c1f40fccd8d83ac632042b9d11557d6d0c940
font_01_sfnt_off000083b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B2 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDB 17716 bytes
SHA-256: 6dcfc10271f0148f8582e9bf19b97120384b03fd5924e10c938384dc0bfbbfde

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