Malicious PDF — malware analysis report

Static analysis result for SHA-256 92e29900cf0579f4…

MALICIOUS

PDF

42.1 KB Created: 2021-05-15 12:34:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ef0d8e425a378775031be90bde118f31 SHA-1: e7ad237bf7b47a730e29cb0f3b3aa889a12fc60c SHA-256: 92e29900cf0579f40e796368fe3a92fb7bf95c6a5cbc1748f96abb9fadbb3272
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are SEO-optimized for game cheats and virtual currency. The ML classifier strongly indicated maliciousness, and the presence of a link farm heuristic further supports a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs suggest a phishing or scam attempt.

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-hack-2021-no-human-verification-game-hack
    • http://agrao.in/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdf
    • http://agrao.in/images/free-coin-master-spins-blogger_GM406889139.pdf
    • http://agrao.in/images/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://agrao.in/images/free-roblox-hack_GM431946152.pdf
    • http://agrao.in/images/roebucks-on-roblox_GM431946152.pdf
    • http://agrao.in/images/coin-master-daily-free-spins-link-haktuts_GM406889139.pdf
    • http://agrao.in/images/free-robux-for-kids-no-verification_GM431946152.pdf
    • http://agrao.in/images/20-free-spin-link-coin-master_GM406889139.pdf
    • http://agrao.in/images/websites-to-get-free-robux_GM431946152.pdf
    • http://agrao.in/images/robux-matchcomfree-robux_GM431946152.pdf
    • http://agrao.in/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdf
    • http://agrao.in/images/free-spins-coins-coin-master_GM406889139.pdf
    • http://agrao.in/images/coin-master-coins-free_GM406889139.pdf
    • http://agrao.in/images/coin-master-free-spins-link-2021-haktuts_GM406889139.pdf
    • http://agrao.in/images/real-coin-master-free-spins_GM406889139.pdf
    • http://agrao.in/images/roblox-points_GM431946152.pdf
    • http://agrao.in/images/coin-master-free-spins-2021-app-download_GM406889139.pdf
    • http://agrao.in/images/free-robux-no-verification-2021_GM431946152.pdf
    • http://agrao.in/images/coin-master-unlimited-free-spins-link-2021_GM406889139.pdf
    • http://agrao.in/images/coin-master-hack-mod-apk-free-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004905.bin
0d5ca22e0f0e03982a2f915e690e4c423d175048f27aaa4730c46e12225266a7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4905 24588 bytes
font_01_sfnt_off000080fa.bin
b8f105c40d85849bb980b8b1f3fc80cc73964bf3899fc8976168334accd52214		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80FA 18652 bytes

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