Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fd0540dccbca43…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 13:03:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-13
MD5: 5bc9aa72f9d6b9efe11f6f92fcfe0958 SHA-1: 3ab87c6957c37d711e84324195436c70c291a379 SHA-256: f2fd0540dccbca4359dc6d5da3d372c55c50a159ed370757547d65b831f03361
180 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.co/app/431946152/how-to-kick-in-free-draw-2-roblox-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-id-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-robux-cheat-for-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-win-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/calamari-roblox-free-accounts_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
font_00_sfnt_off00003066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3066 22540 bytes
SHA-256: 2ff155933806baa96ddabeb5f96388747e70f8d7169bc3adf0bd2d7b493b2908
font_01_sfnt_off000062ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AD 19396 bytes
SHA-256: 4878b8e8e04d87fe519cb212dc16f761ff6865cb2fc018d5186ebf1b29df023b

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