Malicious PDF — malware analysis report

Static analysis result for SHA-256 512781bd4dac4f26…

MALICIOUS

PDF

6.5 KB Created: 2021-06-26 06:00:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5c8de820ada59de36c59d74e42ad866f SHA-1: bb76afc19943054ccc28043cc17d6cb97614118f SHA-256: 512781bd4dac4f26e20bfffd1be094589aa3c6d5460d731195b21a45aa2a26ca
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, primarily offering 'free Robux', 'Minecraft hacks', or 'Coin Master spins'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior, indicating a common lure for malicious redirects or phishing. While no scripts were extracted, the embedded URLs are the primary indicators of malicious intent, likely leading to further malware downloads or credential harvesting. The ML classifier also strongly suggests maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9440

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector high 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/www-free-robux-tips-game-hack PDF link annotation
    • http://studio-dentistico-fiume.com/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/how-to-hack-into-a-roblox-account-2021-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/robux-hack-ohne-handynummer-und-email_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/tiktok-free-apk-download_GM835599320.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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