Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddfc795553eb34c…

MALICIOUS

PDF

34.5 KB Created: 2021-07-20 01:40:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-26
MD5: c430d63954755fbe47ba79857c28bea6 SHA-1: fb77dbfd1b5cf0dd06d821e732ef44c34a1e180d SHA-256: 3ddfc795553eb34c94588608538b0606caf45f6193c53542dcf9835dd5d595a4
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/406889139/coin-master-free-spins-link-2021-game-hack In PDF document text
    • http://laboraltoledo.com/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://laboraltoledo.com/images/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://laboraltoledo.com/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://laboraltoledo.com/images/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://laboraltoledo.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://laboraltoledo.com/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://laboraltoledo.com/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://laboraltoledo.com/images/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://laboraltoledo.com/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://laboraltoledo.com/images/minecraft-font-free_GM479516143.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_off00002f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8D 23324 bytes
SHA-256: ef4a3003575f2398cfaee1e744c4b8e98d82ff2dd8f4f6b87ed0d49affa6d5cb
font_01_sfnt_off0000645e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645E 18456 bytes
SHA-256: 405c435adaafa0da304b7a4986d8f56c56dc87ed278d5cff2ac0c57977d8d7e3

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