Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6823879a811db66…

MALICIOUS

PDF

42.1 KB Created: 2021-05-19 07:10:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5af5ae8519ba92c0d9250c1a418fc605 SHA-1: 92ec936e0b293512d3a76b697fec05c5e6c5e6d3 SHA-256: b6823879a811db66a4e9562a74c9aad66107c74b9100fa2a68ae449217869537
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a 'free generator / game hack' lure, directing users to a suspicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to a malicious site, likely for further exploitation or malware delivery. The document's content and linked URLs strongly indicate a phishing or scam attempt.

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/479516143/minecraft-windows-free-game-hack PDF link annotation
    • http://sbm-nn.ru/images/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-group_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-generator_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://education.minecraftIn 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_off00004a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A1E 25156 bytes
SHA-256: 7e35df34c20ea86d7c6f4cfda186373bb92d08a616e31441e3d7c428205531ff
font_01_sfnt_off00008242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8242 18244 bytes
SHA-256: 17ed61b8d418eb531f0e9f48c5430b9261b703312875c5060f44484e1085bb50

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