Malicious PDF — malware analysis report

Static analysis result for SHA-256 cea282b2f38cbd1c…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 08:32:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c131fecdc29d4fc6ae36cbf80db8e18a SHA-1: 153b646f7523e901702583acb23389e0940c41d5 SHA-256: cea282b2f38cbd1c9a56aa82a2ef6b02fdfc8ff366c534617d0a5fd52273756a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/free-robux-promo-codes-game-hack PDF link annotation
    • http://windhorsetrek.com/userfiles/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-hack-club-tesla-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-download_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-free-robux-khaos_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/hacks-for-ninja-legends-simulator-for-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-roblox-credit-for-free_GM431946152.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_off00002ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAD 22116 bytes
SHA-256: 741dfa7c95a0323256447836f879b1a075caa98d55d110299fee0ede8212e8b9
font_01_sfnt_off00005f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F61 19304 bytes
SHA-256: b8217d46ff736f49d3e7fbbf4ad016b5c147b05ee0ff1e8951011688dc8d1bae

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