Malicious PDF — malware analysis report

Static analysis result for SHA-256 04166bbe882b3902…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 11:51:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e250f99535deb99d76f32245632e35ed SHA-1: 50a24e05dcbdb4264302647de2418dc7019416fd SHA-256: 04166bbe882b3902ad9d245a2fc0aff1ae0d9935bb3ee20c56aa973f3192467a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack redirector, specifically targeting 'Coin Master' players. The embedded URL and document body text reinforce this lure. While no scripts were directly extracted, the PDF structure and linked URLs suggest it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-get-free-cards-game-hack PDF link annotation
    • http://whiteyaknepal.com/userfiles/files/my-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-hack-roblox-to-get-free-robux_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
stream_003_off00004ad9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD9 25480 bytes
SHA-256: 8eeae9bb19032f59e03edd949b0f4bb736921b890ed75b59e7f0b49cf80ee856
font_01_sfnt_off00008631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8631 17884 bytes
SHA-256: 5b281f9ab4f938cb23f4159929956e1cae7172efdead6ba15b04f3aeaf5d2e05

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