Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9684584c9f7a8dc…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 07:25:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0cf5b1e372f392a5f6233004f8bf4bc0 SHA-1: ea9ce24dd461fb30fe883041ea36969736501849 SHA-256: d9684584c9f7a8dc05ada0a0950a6efe4f25219862be043c32b8cde6b10c7c03
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it's a game hack redirect lure, pointing to a specific URL. The document body also contains this URL, reinforcing its role as a lure for potentially malicious content. While no scripts were directly extracted, the nature of the lure suggests it's designed to trick users into downloading or executing further malware.

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-free-spins-link-31-march-2021-game-hack PDF link annotation
    • http://www.fkunismuh.org/perpustakaan/repository/black-tank-top-roblox-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-com-easy_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-roblox-tuxedo_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/synapse-roblox-free-june-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-cheat-uscom_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/www-robux-us_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-spin-free_GM406889139.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_off00002ffc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FFC 23400 bytes
SHA-256: 86b0279064f3f9e003764fd7cee5bf1277e20351236b725ec11a5f1ef3e1ded2
font_01_sfnt_off000064d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D1 19088 bytes
SHA-256: 4c8ff383bfc675ee23c699e868c0decf1b9f6417ddc692102889bda26189b506

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