Malicious PDF — malware analysis report

Static analysis result for SHA-256 e682836952287be0…

MALICIOUS

PDF

15.5 KB Created: 2021-06-11 00:34:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 241a353c7d9464b36ae0882348dfa4b6 SHA-1: c9602d4384b82954bcd32f093727a421ea2e3976 SHA-256: e682836952287be0edcd2d479d79d738a74d0605199c07592cab9458d71ef0e3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to entice users. It contains multiple links, including one to a known malicious redirector infrastructure at `https://netcdn.tw/app/431946152/free-robux-2021-no-survey-game-hack`. The primary goal appears to be directing users to potentially malicious websites through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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-2021-no-survey-game-hack In PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/free-robux-password-required_GM431946152.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/roblox-free-clothes-maker_GM431946152.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • https://www.naizak.com/uploaded_files/userfiles/files/optifine-pe_GM479516143.pdfIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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