Malicious PDF — malware analysis report

Static analysis result for SHA-256 2516e2b486f7f896…

MALICIOUS

PDF

12.1 KB Created: 2021-05-19 16:39:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bc5ddb8c2b45563e1e5526f2b350f45d SHA-1: a7982c83a3a114bacf534231f66798bd8f127a91 SHA-256: 2516e2b486f7f896d6904cd5058428962a5f11ae2cda3d5d8a695bbec1cc0eb5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The embedded URL and multiple other URLs found in the document body all lead to similar scam-related content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious website, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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.xyz/app/431946152/how-to-get-a-lot-of-robux-game-hack In PDF document text
    • http://nosocomium.rv.ua/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://nosocomium.rv.ua/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://nosocomium.rv.ua/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://nosocomium.rv.ua/images/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://nosocomium.rv.ua/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://nosocomium.rv.ua/images/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://nosocomium.rv.ua/images/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://nosocomium.rv.ua/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://nosocomium.rv.ua/images/free-robux-no-apps_GM431946152.pdfIn PDF document text

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