Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ad434e7dc4e102…

MALICIOUS

PDF

47.9 KB Created: 2021-06-07 21:54:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 08437c545c629dc078db2a61b93240b2 SHA-1: 503f9bcbacb200853f397805e85d372754eaacff SHA-256: b6ad434e7dc4e10299ff928c564706305fde8d587344f44b1cec5cc49220bc3a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free generators, directing users to a malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to a potentially malicious site for further exploitation. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/roblox-dinosaur-simulator-cheat-game-hack PDF link annotation
    • http://www.sapaengineering.kz/images/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-free-robux-on-ipad-2021_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/moon-active-games_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-free-items-on-roblox-no-pastebin_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E33 26604 bytes
SHA-256: 4ef94640b1370f763b2794fa5233409a1c7dd5c9e84214009d5f787bfae3fbc9
font_01_sfnt_off00008cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB0 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000969b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x969B 18968 bytes
SHA-256: 7bbb6884ae64df9b779ead0bff33f43186cf4a401651908f373bd3ef0cdf914d

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