Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3282215c3f13c2…

MALICIOUS

PDF

46.4 KB Created: 2021-06-09 00:55:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 2ea6eb3fcca2a40fb6e1d37a55cd31ae SHA-1: 0eaef03d9bbca75fa290edf9d2e7344308af5db7 SHA-256: 4e3282215c3f13c25e314d1814735f941f0e0e8da4f119ca786fb272ecec39fc
180 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/robux-hack-robux-no-survey-game-hack In PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/do-you-want-some-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-robux-no-survreys_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/claim-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_004_off000051b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B9 27836 bytes
SHA-256: 576d473282449b5c38211754e2e55226868e01cd0e0b4e170e322b7fa8074282
font_01_sfnt_off00009221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9221 18544 bytes
SHA-256: 23a2b0a83f1d7e51816efa64e4e540d8613cc9e7e551b5377e71fedae5a4aebd

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