Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8954ae749c01374…

MALICIOUS

PDF

41.9 KB Created: 2021-05-17 09:30:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e516b0e917014f9549f505fc35a5a278 SHA-1: 828620972e7b3357844a444bcb70bf7f28524061 SHA-256: e8954ae749c01374320fd12a0adfb5a78e59ffe1faa078b79435fe98f17dc8fa
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, forming a link farm, and a primary URL associated with game hacks and free spins. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains text related to game hacks and a URL, suggesting a phishing or scam attempt to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/coin-master-free-spins-no-human-verification-game-hack
    • http://guimaq.com.br/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdf
    • http://guimaq.com.br/images/can-you-give-me-free-robux_GM431946152.pdf
    • http://guimaq.com.br/images/coin-master-hack-app-link_GM406889139.pdf
    • http://guimaq.com.br/images/coin-master-hack-spin-link_GM406889139.pdf
    • http://guimaq.com.br/images/coin-master-free-link-daily_GM406889139.pdf
    • http://guimaq.com.br/images/can-you-get-robux-for-free_GM431946152.pdf
    • http://guimaq.com.br/images/free-robux-come_GM431946152.pdf
    • http://guimaq.com.br/images/coin-master-free-coins-link-2021-deutsch_GM406889139.pdf
    • http://guimaq.com.br/images/coin-master-hacks-for-android_GM406889139.pdf
    • http://guimaq.com.br/images/roblox-2021-hack_GM431946152.pdf
    • http://guimaq.com.br/images/coin-master-free-spins-generator-no-verification_GM406889139.pdf
    • http://guimaq.com.br/images/coin-master-free-spins-hack-iphone_GM406889139.pdf
    • http://guimaq.com.br/images/minecraft-skins-download-free_GM479516143.pdf
    • http://guimaq.com.br/images/robux-hack-free-robux_GM431946152.pdf
    • http://guimaq.com.br/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdf
    • http://guimaq.com.br/images/best-free-minecraft-servers_GM479516143.pdf
    • http://guimaq.com.br/images/free-roblox-followers-generator_GM431946152.pdf
    • http://guimaq.com.br/images/how-to-get-free-robux-without-any-verification_GM431946152.pdf
    • http://guimaq.com.br/images/hacks-minecraft_GM479516143.pdf
    • http://guimaq.com.br/images/coin-master-daily-free-coins-link-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048b1.bin
26d02191b7cb0020b4f5049c7a8084931cc0564df58ce6b4d4bf81502cb04d47		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B1 24656 bytes
font_01_sfnt_off000080ec.bin
bda9d64311803d8ca1e60170c3ec5fa1333a71d10f10bc88962b6478ba2902e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80EC 18420 bytes

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