Malicious PDF — malware analysis report

Static analysis result for SHA-256 18be15942192964e…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 04:12:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7c0ad4ccc6960bc2acaf0735f4cece95 SHA-1: 59f39766bf80a03c6aae29a82095c38295f8de54 SHA-256: 18be15942192964ea62bc2bf7a035825b69252466015f9a697d4f1991f37cd6b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to a 'game hack' lure, specifically targeting users interested in Roblox. The primary malicious URL identified is http://netcdn.tw/app/431946152/hack-roblox-account-kali-linux-game-hack. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

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/431946152/hack-roblox-account-kali-linux-game-hack PDF link annotation
    • http://library.unissula.ac.id/fe/repository/earn-rbx_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-bypass-human-verification-on-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-robux-easy-and-fast-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/2021-fe-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/tap-this-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/robux-promo-code-hack_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-cheat-speed-run-4_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-roblox-admin-for-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/pokemon-go-free-app_GM1094591345.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-free-spins-2021-hack_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_off000030fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FC 22088 bytes
SHA-256: 40c874ac73b563ed76a19d469dd427360a2076d4a743fb9246c25a1d5b361d07
font_01_sfnt_off000061c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C9 18836 bytes
SHA-256: 287eb43b0f762d67535826a9c407355b1bdc6f78a137eca21ed2c2ec566f64b8

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