Malicious PDF — malware analysis report

Static analysis result for SHA-256 1efa0e1d29a31084…

MALICIOUS

PDF

5.3 KB Created: 2021-07-06 05:47:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 7f84a7bf1b07f780a4270ba29f10b659 SHA-1: e5d7fd523faad0ae2ad0e684dd79187152babb6b SHA-256: 1efa0e1d29a31084ca018218af1424768151b2a4ada692ec9a453b68793f0bf1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games. The primary lure URL is http://netcdn.tw/app/406889139/coin-master-hack-apk-download-latest-version-game-hack, which is flagged as a malicious redirector. This suggests a phishing or scam campaign aiming to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9862

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/coin-master-hack-apk-download-latest-version-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/inspect-element-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-offers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/design-it-hack-scirpt-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-game-code_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-building-simulator-free-time-maschin_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text

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