Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee3953f1172b9af…

MALICIOUS

PDF

36.4 KB Created: 2021-06-18 02:15:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c8bc7a18c389d766025aa8fdf2153b98 SHA-1: 2161c5c0bc374f3e064aa36481e4625ca3050110 SHA-256: 6ee3953f1172b9affe720279856d5c268ace264d71dc665f5ea7d88ee1156d9b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.co/app/431946152/free-robux-download-games-game-hack PDF link annotation
    • http://pustaka-smpn3tpi.com//repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-game-cards-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/conquerors-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/ruso-icu-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-reward-link_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
font_00_sfnt_off000034c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34C6 22888 bytes
SHA-256: 6de5b05be16a11c9d2013eb1aab2a3f36f258fbe2ee656e4af95ee2f38dbbd9f
font_01_sfnt_off000067fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FB 19556 bytes
SHA-256: f2f67a35246828be32296114072683fed01c7a5122cf38a31d335649fc678049

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