Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ddceadeaa067726…

MALICIOUS

PDF

15.8 KB Created: 2021-06-10 21:47:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e3684255b77ebfa838aca54266862403 SHA-1: cc9da8b537379857da3d1a3094ddac179a2a62e0 SHA-256: 8ddceadeaa0677268af4ba2434e75c4e7c69bc722c0f72e1c964da36123483a2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for free in-game currency or hacks, directing users to a known malicious redirector. The embedded URL, 'https://netcdn.tw/app/431946152/free-robux-codes-not-clickbait-game-hack', is identified as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lead the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

Heuristics 3

  • 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.
  • 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/free-robux-codes-not-clickbait-game-hack In PDF document text
    • https://www.unicor.co.th/assets/editoruploads/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://www.unicor.co.th/assets/editoruploads/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://www.unicor.co.th/assets/editoruploads/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://www.unicor.co.th/assets/editoruploads/files/roblox-phantom-forces-mod-free-weapons_GM431946152.pdfIn PDF document text
    • https://www.unicor.co.th/assets/editoruploads/files/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.unicor.co.th/assets/editoruploads/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://www.unicor.co.th/assets/editoruploads/files/builders-club-roblox-free-for-kids_GM431946152.pdfIn PDF document text
    • https://www.unicor.co.th/assets/editoruploads/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://www.unicor.co.th/assets/editoruploads/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text

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