Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ef09c4a1e6705e…

MALICIOUS

PDF

17.6 KB Created: 2021-07-09 19:03:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 4f2e0ce105f855c90005df18e25b0b02 SHA-1: 6d8b89099f2977f2d27a60006769553de420382e SHA-256: 54ef09c4a1e6705e0f981f749c303de4111aeb6bb55f4bff87eb1a58d0e1ad97
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites that are flagged as malicious redirectors, specifically promoting 'free generator / game hack' lures. The document body and extracted URLs indicate a phishing attempt to trick users into visiting these sites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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-free-spins-link-today-twitter-game-hack In PDF document text
    • http://ycstamping.com.tw/image/data/files/script-hack-roblox-legend-of-speed_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/robux-at-roblox-tody-for-free_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/free-robux-pagedemo-co_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/surveytool-free-robux_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/22-500-robux-hack_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/roblox-paintball-level-hack_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/how-to-get-robux-for-free-fast_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/free-robux-adder_GM431946152.pdfIn PDF document text

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