Malicious PDF — malware analysis report

Static analysis result for SHA-256 5187a6fbcd1d7b7c…

MALICIOUS

PDF

23.8 KB Created: 2021-06-08 14:16:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 304744a393b71ba664c1ea468dc96406 SHA-1: 4a358c6b1836edd14095346e4a2c81edfae7e09f SHA-256: 5187a6fbcd1d7b7ca0cf515988848cf839ceee8a3ef592122c4735414b9fb6f6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links to known malicious redirectors, specifically advertising free generators for games like Roblox. The embedded URL 'https://netcdn.tw/app/431946152/www-roblox-com-free-games-at-roblox-com-game-hack' is a primary indicator of this lure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially harmful content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/www-roblox-com-free-games-at-roblox-com-game-hack In PDF document text
    • https://deutsch-study.com/image/data/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-tiktok-bots_GM835599320.pdfIn PDF document text

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