Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f1affdefee9b963…

MALICIOUS

PDF

15.0 KB Created: 2021-07-05 17:50:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 3676cc11a93094d716902bef29a4a4ec SHA-1: 5eee4d82d51b358ff81e26b79064ddf07cc69434 SHA-256: 3f1affdefee9b963a29d651a0b8350afc3ace0628ca8c3ff8a062cf2d7563f7d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The primary lure, 'how-to-hack-coin-master-in-pc-game-hack', points to a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to drive users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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/how-to-hack-coin-master-in-pc-game-hack In PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-with-no-verifcation-surveys_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/google-roblox-extension-hacker_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-hack-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robuxs-no-human-vefication_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-is-getting-hacked_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/30-robux-free_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-spin-rewards_GM406889139.pdfIn PDF document text

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