Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4f55f24f787e04f…

MALICIOUS

PDF

16.0 KB Created: 2021-06-20 17:00:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 23cc4e2767d65ca2068253ca40f04926 SHA-1: 083d3876d77715e98128c4da56cf89164a24e2d1 SHA-256: f4f55f24f787e04fada68598529ec1fc0aad6f0282672470b1359bb124b06ee4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lure users with promises of free game items or hacks. The primary link, http://netcdn.co/app/431946152/free-halloween-stuff-roblox-game-hack, is designed to lead users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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.co/app/431946152/free-halloween-stuff-roblox-game-hack In PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/google-moon-active_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/roblox-cheats-of-xbox-one_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/roblox-aimbot-hack-for-nerf-fps_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/roblox-cheat-engine-scripts-2021_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/https-iosgodscom-topic-20213projectrobloxhackbeta_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-hack-through-walls-on-roblox-2021_GM431946152.pdfIn PDF document text

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