Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3f448e0c242bea…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 23:36:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: b01bc79107463587d582551380d40c3f SHA-1: 12498eac7d574af261adcc060ab00bec8d3c7eb8 SHA-256: 4e3f448e0c242bea1335e070d94308a5c0cebab4062818ecc946cf5e7b9b1a26
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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 http://netcdn.tw/app/431946152/bux-life-free-robux-game-hack In PDF document text
    • https://eyeonhimalaya.com/userfiles/files/www-robux-com_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-in-iphone-6_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/link-coin-master_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-spin-whatsapp-group_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_off00002f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F81 22276 bytes
SHA-256: 06440092f846e0cd4a5202ecab81c87b57a0eb9ea61e22aeea38e34a57a04928
font_01_sfnt_off00006109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6109 18836 bytes
SHA-256: 7f12d751da4e96ccad4d997d7560df235183c1e20666712b69b1e712c003bbe9

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