Malicious PDF — malware analysis report

Static analysis result for SHA-256 333c524eb605af62…

MALICIOUS

PDF

16.5 KB Created: 2021-05-16 01:12:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: eb34838db630155f60ed8ed0befd1e54 SHA-1: 120f7b5a5ae0cc27e9f65fa5d06a7c5fad4c28ea SHA-256: 333c524eb605af621b803b954e0f98e78312d8e8c793a22964e6f741b0d55fb8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically promoting 'free Robux generators' and game hacks. These links likely serve as a lure to direct users to potentially malicious sites or to download further malware. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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/431946152/free-robux-generator-without-verification-game-hack In PDF document text
    • https://dientubentre.com/public/upload/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/generator-robux_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/roblox-cp_GM431946152.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://dientubentre.com/public/upload/files/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text