Malicious PDF — malware analysis report

Static analysis result for SHA-256 c213abdcef3d4987…

MALICIOUS

PDF

35.8 KB Created: 2021-06-27 13:06:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2eea0b70835e1c0be338fd99801b981e SHA-1: 603cef97239ae2afc59536beb84ea7c1936fd3ce SHA-256: c213abdcef3d49877a701c28bae7800a30ce3e48c0662c52ab1ea312e5b0bea5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, primarily offering game hacks and generators for popular games like Roblox and Coin Master. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates that these links are designed to redirect users to malicious sites, likely for credential harvesting or malware distribution. No scripts were extracted, but the document's structure and embedded URLs point to a social engineering attack.

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.co/app/431946152/how-to-make-a-private-server-for-free-on-roblox-game-hack PDF link annotation
    • http://www.med-aid.vn/ckfinder/userfiles/files/hack-codes-for-roblox-v3rmillion_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/tiktok-free-view-jelly-fruit_GM835599320.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/robux-prices_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/roblox-executor-free_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/ultimate-driving-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/https-hack-de-robux-roblox-robux_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/hacker-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/www-roblox-games-free-com_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_off0000319b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319B 22872 bytes
SHA-256: 70c03a9eae1a4098d6f939eb27e06ea0584de33cc8648e605ae837f23a067af1
font_01_sfnt_off00006510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6510 19672 bytes
SHA-256: fca20a133420f667905660882e6a3a7e84aaf3f7e8c553e2b1a9e511689a12f1

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