Malicious PDF — malware analysis report

Static analysis result for SHA-256 c501ed29831fb54b…

MALICIOUS

PDF

43.0 KB Created: 2021-06-03 12:13:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c67b9cd315be6c8486a5cddb32023b1b SHA-1: b7700d5bd2a9123b473e23a34fb07f5be1032e7d SHA-256: c501ed29831fb54b521cee24c635db529aa43fc095faa6be44fb8fef57d7515b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that advertise game hacks and free in-game currency, such as 'install-coin-master-game-hack'. These lures are designed to trick users into downloading potentially malicious software. The ML classifier also flagged this PDF as malicious, increasing confidence in this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/406889139/install-coin-master-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/com-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-hack-game_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
stream_004_off00004e0a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E0A 25108 bytes
SHA-256: c87da572939dca5c47e452a2b0831f2b32300edbcb469249d5c8e1c6128f152a
font_01_sfnt_off00008781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8781 17620 bytes
SHA-256: bdd3f6fa08a68690a33effe7c91399080072412a80d1c2cf12d0a6868a7ffe9a

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