Malicious PDF — malware analysis report

Static analysis result for SHA-256 11559c8d625441e1…

MALICIOUS

PDF

15.6 KB Created: 2021-05-14 19:41:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: a45d8f3c17494130d840086d1a0a8178 SHA-1: 89648360ced66213b1b4915a34b065ff806559cc SHA-256: 11559c8d625441e1043e67504f6146da59b1971cd0cb7d345c7f939d51d5d0d2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures. These links likely lead to further malicious content or phishing pages designed to trick users into downloading malware or revealing sensitive information. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/free-spins-and-coins-coin-master-2021-link-game-hack In PDF document text
    • https://key8013805.com.tw/upload/files/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/roblox-top_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/mcpe-optifine_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/roblox-sexually-abused_GM431946152.pdfIn PDF document text