Malicious PDF — malware analysis report

Static analysis result for SHA-256 322c48ba62f1924c…

MALICIOUS

PDF

16.0 KB Created: 2021-06-25 18:45:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d89f51da6a8db05d1178810e4d52436e SHA-1: cd9a0b6c0862d205d22c42b082566466fdd727bc SHA-256: 322c48ba62f1924c926aee91a0b6fec3b294cfc973ae8435421a82d5b56a6e6a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to malicious infrastructure, specifically promoting 'free game hacks' and generators. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the document's structure and embedded URLs strongly suggest an attempt to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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/roblox-bear-face-mask-free-game-hack In PDF document text
    • https://loba.com.vn/public/upload/files/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/fbchampion-com_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-pokemon-givers-roblox_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/best-meliodas-roblox-face-free_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-free-download_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/case-clicker-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-roblox-place-downloads_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text