Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f3f976b2e80bb27…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 19:14:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f60178f85b627a2a018e2d9e7ecc805c SHA-1: 851404c1ded94ac443d9c6cd963ac548e3e9315b SHA-256: 3f3f976b2e80bb273351df59ef0942059b6f66d1d99b2ee42363b08cdcd63247
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, with a primary focus on 'game hacks' and 'free generators'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates that these links are designed to redirect users to potentially malicious content or phishing pages. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/406889139/coin-master-hack-here-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-private-server-roblox-strucid_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/downlos-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-items-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-gift_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-da-hood-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-robux-easy-no-wait_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-girl-shirts_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/xdaniel-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-into-your-friends-roblox-account-with-robloxsecurity_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/bug-me-not-free-account-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/10m-free-robux-daily_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000311c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311C 22316 bytes
SHA-256: e33a91650c48993f1fdae36e61b52f137c7904432e59c97ccf4cfd26999162f6
font_01_sfnt_off00006268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6268 18004 bytes
SHA-256: 2f3a5855c5bac228d8d27cc7f61b57eebad79d58a924e470a0477843dff273c7

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