Malicious PDF — malware analysis report

Static analysis result for SHA-256 10f69a79058bcf32…

MALICIOUS

PDF

41.0 KB Created: 2021-05-10 15:43:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f859435f0f92f6a2355ebeb8a9d6dda7 SHA-1: 112627ec5814fc47637ce5c5069e57937f9af2aa SHA-256: 10f69a79058bcf32cf79bca49650ee829e10653084020908d5ae0a67df23000c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded URLs, with a primary focus on luring users with promises of game hacks and generators for popular games like Coin Master and Robux. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest the document is designed to redirect users to potentially malicious websites that may host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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.xyz/app/406889139/hack-coin-master-iphone-game-hack PDF link annotation
    • http://multiconfianca.com.br/ckfinder/userfiles/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-robux-place_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/robux-match_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_003_off000043d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x43D8 25776 bytes
SHA-256: ee6eebf2075b643d9266cc209db60bc68f22fa97a3540d2c7297194bb562cb22
font_01_sfnt_off00007ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF9 18060 bytes
SHA-256: 98ffcaa8ac03649816b9da258085ae9fc6eae62b2f5ad3ff33c1336735992c31

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