Malicious PDF — malware analysis report

Static analysis result for SHA-256 9035b3a70e07655c…

MALICIOUS

PDF

6.7 KB Created: 2021-07-06 05:06:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4dee600b670fadf2700c426e503fa2e5 SHA-1: 30872dea700b79421665940edaba2047e68a5b63 SHA-256: 9035b3a70e07655c20ec341579c2105a055f587bdc2e58b8ab5f70af1936d5b0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generators' and 'game hacks' as a lure. The primary malicious URL identified is http://netcdn.tw/app/406889139/haktuts-coin-master-free-spin-link-game-hack. This suggests a phishing or social engineering attack aiming to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9581

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/haktuts-coin-master-free-spin-link-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/run-free-roblox-id_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-bc-for-free-october-2021-roblox_GM431946152.pdfIn PDF document text

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