Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd70391ac113a0d0…

MALICIOUS

PDF

41.9 KB Created: 2021-05-15 07:50:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 5f90c842668d96c17015edf58d408ef7 SHA-1: a380a92375798387901f669a432d2187e76c5f82 SHA-256: cd70391ac113a0d02b8f61950a22edacd4e11472ebf3128ab2a0923f7277d8e4
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • 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-free-spins-hack-apk-download-game-hack In PDF document text
    • https://www.lauresa.de/images/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://www.lauresa.de/images/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • https://www.lauresa.de/images/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • https://www.lauresa.de/images/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • https://www.lauresa.de/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://www.lauresa.de/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.lauresa.de/images/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.lauresa.de/images/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • https://www.lauresa.de/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.lauresa.de/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lauresa.de/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lauresa.de/images/coin-master-strategy_GM406889139.pdfIn PDF document text
    • https://www.lauresa.de/images/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • https://www.lauresa.de/images/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • https://www.lauresa.de/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://www.lauresa.de/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.lauresa.de/images/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.lauresa.de/images/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • https://www.lauresa.de/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://www.lauresa.de/images/extra-free-spins-for-coin-master_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
stream_003_off000047ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47FF 24720 bytes
SHA-256: 7b21ed4d6153568d6391f29dbcc781bed52642850c49fb92ab898bf8041d0d45
font_01_sfnt_off00008027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8027 18636 bytes
SHA-256: 5481d0302ec3c0ba5c2d586dcd50dd6b5df695462c9cc4a17d5c66f6ba577068

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