Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ad837838832f89c…

MALICIOUS

PDF

35.3 KB Created: 2021-06-26 00:44:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 58320d7a073ad5d7cbb4ddb18f1e34e2 SHA-1: 17d85b64922f37ac9696624799c501ee0ea7df73 SHA-256: 2ad837838832f89c66ddee90c4c5907487762787f78d6a52f8da654c7179e687
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.co/app/431946152/how-to-become-admin-using-cheat-engine-on-roblox-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/how-to-change-your-roblox-name-for-free-working-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-hole-in-the-wall-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-script-exacutor_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-accounts-2021-bugmenot_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-dominus-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-with-points_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-shirt-templates-free-shipping_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-free-purple-eye-thing_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-august-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-giovannis-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-without-human-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D8 22692 bytes
SHA-256: 3c914d1d2a914a1bfdd0cd6dbea5c76287287b02ea94883b340b934465b19347
font_01_sfnt_off000063c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C6 19472 bytes
SHA-256: 3de4fc6f8395cb4843510d5691ef86c4e986f489721618b59b7eb36d0e73e50f

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