Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f297c07d5eae3f…

MALICIOUS

PDF

3.9 KB Created: 2021-07-04 06:29:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 3d8050fb1ec158f722e205b412a63b52 SHA-1: 66eb7d8f0daf388a9e8a867c59451d7578fe13c3 SHA-256: f5f297c07d5eae3ff1612d5098d3816f532a81208e43cbd4759f91d4c908f2a2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one that redirects to malicious infrastructure, disguised as game hacks and generators. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent, likely leading to further malware or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9867

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/835599320/freer-pro-tiktok-fans-game-hack In PDF document text
    • http://www.3d-gold.com.hk/upload/files/hack-r2d-money-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-get-free-robux-no-hack-or-cheat-2021_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-robux-rush_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-speed-hack-on-roblox-2021_GM431946152.pdfIn PDF document text

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