Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d476a2cc197e85…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 09:23:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 39ac720bde4bc287e9881bfc6296131b SHA-1: 5047094d55196abeb01425c2d71b02fca5998247 SHA-256: c8d476a2cc197e85b60480fc51b5edc9defbcdaf1b288274955edb656d7188be
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free in-game currency, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a phishing or scam attempt. The document body contains the primary lure and the malicious URL.

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/431946152/free-robux-on-ipad-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-unban-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/pubg-uc-code-redeem_GM1330123889.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-cheat-client-juillet-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-clothes-for-your-avatar_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_off000030c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C1 22136 bytes
SHA-256: c630e1894fd855087127b2a9ff00672043fc1c2fe6c8b22c92fa3359be04c2bb
font_01_sfnt_off000061ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EE 19068 bytes
SHA-256: 67e53c85bca0a69857880cc13847ac6002be1334b1a281a29b6a7cf4a4c37e3d

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