Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9a40cb8751956e…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 09:20:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f0d5987e22d11067f651410967055743 SHA-1: 606608545da54df26bb7e89930237221384c3e87 SHA-256: eb9a40cb8751956ee9304e2e8d5cd467f492e71364a8e713256906520a73bd8a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and free in-game currency, a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were explicitly extracted, the nature of the lures suggests the linked external sites are designed to download further payloads or trick users into providing sensitive information.

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/406889139/coin-master-free-spin-link-today-2021-game-hack PDF link annotation
    • http://steklofara.com.ua/images/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://steklofara.com.ua/images/get-free-robux-by-downloading-apps_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://steklofara.com.ua/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://steklofara.com.ua/images/free-roblox-app-for-ipad_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://steklofara.com.ua/images/how-to-hack-on-tablet-roblox_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/how-to-get-free-robux-by-watching-videos_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://steklofara.com.ua/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • http://steklofara.com.ua/images/someone-hacked-me-on-roblox_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/roblox-island-royale-hacks_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/free-robux-net_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/robux-gratis-hack-2021_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/instantrobux_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/hacks-on-roblox-chat_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_002_off00002f54.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F54 23308 bytes
SHA-256: fb90e4c3f54e7eee70be253dbdf15caf4083d6de4654d6e20160889c2cd53791
font_01_sfnt_off00006412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6412 19100 bytes
SHA-256: 87948dd456158924639af78db2b6f448ba4bec773812a2cc2fa62bc058a3e5dd

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