Malicious PDF — malware analysis report

Static analysis result for SHA-256 49cd25c172fda492…

MALICIOUS

PDF

27.7 KB Created: 2021-05-10 19:30:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: bc17d31e5829abd876af3c04ad31818d SHA-1: bf8090122ccb123a81e5d21b10b552f683db8d76 SHA-256: 49cd25c172fda492b1b0cc83cc66df42e4d48ab3bdeeda5c92166f132fb01d41
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 0.9759

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/431946152/free-robux-accounts-game-hack PDF link annotation
    • http://kita-sunshine.de/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/robux-now_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-free-spins-link-blogspot_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_off00002081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2081 19704 bytes
SHA-256: 9a1bba725f93204631b98f4728e6a6a7013f7c15eadee4fb959729ea8c60c349
font_01_sfnt_off00004a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A04 18120 bytes
SHA-256: ef72730342a71d63428e939ae8b3e53b657bfaebcd113dd5195284c27a8ef9c4

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