Malicious PDF — malware analysis report

Static analysis result for SHA-256 99db7a56ad824abb…

MALICIOUS

PDF

33.4 KB Created: 2021-06-20 22:35:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f4ee96ceeedb46a6dc6ab03dde6c3296 SHA-1: 054ce03028dced25d9df0a35994e9a00f21952f5 SHA-256: 99db7a56ad824abb2474449b3057d2ac4d100f800fbdfd0ffe5d0f572f0773e6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites advertising game hacks and generators for popular games like Pokemon Go and Roblox. The ML classifier strongly indicated maliciousness, and the presence of these lures suggests the document is designed to trick users into downloading malware or visiting malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/how-to-hack-pokemon-go-roblox-game-hack PDF link annotation
    • http://en.leechan.com.cn/Public/upload/editorfiles/slup-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/how-to-get-free-money-from-roblox_GM431946152.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/pokemon-go-free-pokeballs_GM1094591345.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://en.leechan.com.cn/Public/upload/editorfiles/how-to-get-free-skins-on-coin-master_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_off00002c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C05 22268 bytes
SHA-256: 09ba8a7630b35e4df972f53d2d4cd58ace81726a8b6893f39e3b447dad5d4c8e
font_01_sfnt_off00005d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D53 19232 bytes
SHA-256: 85d5229605d39cba1fc227e35d6f2a777bf4a9d69e70f5724249e8cc5ba475f3

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