Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3f6f55bef9758ce…

MALICIOUS

PDF

16.4 KB Created: 2021-05-11 05:36:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: fa92a21f77add199dc11d271674ee714 SHA-1: aff51be5b76711ce6848560d417482c84d70862d SHA-256: a3f6f55bef9758ce0f9bc320025e23ecaf79475e76c25506e9190b37e0219bdb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting "free Robux generators" and game hacks. The primary link directs to `https://netcdn.xyz/app/431946152/real-free-robux-generator-game-hack`. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/real-free-robux-generator-game-hack In PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/picture-roblox_GM431946152.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://elr.manubaba.com/__statics/gudangsoal/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text

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