Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef1b2fdeae94419…

MALICIOUS

PDF

10.9 KB Created: 2021-07-03 17:18:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 67bdd15841644e4a32f0a8926f1a4032 SHA-1: a1336e7e00e5e2b97ca6926e2e57bd28dcbf0b8a SHA-256: fef1b2fdeae94419805e9d32ceb5a3e067b2623e9caa81885041f729992c4396
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text referencing 'free Robux' and game hacks, indicating a social engineering lure. The primary URL, http://netcdn.tw/app/431946152/get-robux-for-free-2021-game-hack, is directly linked to this lure. While no scripts were extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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.tw/app/431946152/get-robux-for-free-2021-game-hack PDF link annotation
    • https://www.fishboat.hr/files/hack-roblox-robux-code_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://fishboat.hr/files/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://fishboat.hr/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/how-to-get-roblox-back-if-i-was-hacked-2021_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/best-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.fishboat.hr/files/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/roblox-project-jojo-hacks_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/lua-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/roblox-free-robux-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/site-17-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/can-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/wyas-of-getting-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text

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