Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c45791790a2d330…

MALICIOUS

PDF

6.7 KB Created: 2021-07-05 11:40:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 01e517863db1b03776d44dbac6d4f676 SHA-1: 0ffb123835e52f04fd79811d537cdb3a6930f7d6 SHA-256: 4c45791790a2d33076f7c51b4d411f422e88d1c691eb406b86b48fbe91bacde7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "free generator / game hack" lures. The primary link, http://netcdn.tw/app/406889139/free-spin-generator-for-coin-master-game-hack, is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9164

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 http://netcdn.tw/app/406889139/free-spin-generator-for-coin-master-game-hack In PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-hack-back-your-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/roblox-marvel-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/trurkey-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-hack-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/easy-hacks-online-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/robux-fun-hack_GM431946152.pdfIn PDF document text

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