Malicious PDF — malware analysis report

Static analysis result for SHA-256 3defd25bdf2a6568…

MALICIOUS

PDF

44.3 KB Created: 2021-05-16 11:01:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 18cb7d56c8c5578880e60738d38eaae1 SHA-1: a05e2313ae869c592486ef6ee6b4e0cf7aa527ae SHA-256: 3defd25bdf2a6568b6de6181948d6395de150ddbdbd79e13c35d3e2c293f9227
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a prominent external URI pointing to game-related downloads, suggesting a lure for users seeking cheats or hacks. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate the presence of download lures and external links, aligning with a phishing or malware distribution attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/479516143/minecraft-pocket-edition-free-apk-game-hack
    • http://brinicombe.co.uk/images/www-rbxhut-com_GM431946152.pdf
    • http://brinicombe.co.uk/images/roblox-fun-com-free-robux_GM431946152.pdf
    • http://brinicombe.co.uk/images/bloxpage-free-robux_GM431946152.pdf
    • http://brinicombe.co.uk/images/coin-master-daily-free-spins-link-today_GM406889139.pdf
    • http://brinicombe.co.uk/images/best-hacked-client_GM479516143.pdf
    • http://brinicombe.co.uk/images/free-minecraft-java-code_GM479516143.pdf
    • http://brinicombe.co.uk/images/moonactive-free-spins-2021_GM406889139.pdf
    • http://brinicombe.co.uk/images/free-robux-videos_GM431946152.pdf
    • http://brinicombe.co.uk/images/free-links-for-coin-master_GM406889139.pdf
    • http://brinicombe.co.uk/images/best-free-minecraft-servers_GM479516143.pdf
    • http://brinicombe.co.uk/images/robux-2021_GM431946152.pdf
    • http://brinicombe.co.uk/images/spin-free-coin-master_GM406889139.pdf
    • http://brinicombe.co.uk/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://brinicombe.co.uk/images/roblox-password-hacker_GM431946152.pdf
    • http://brinicombe.co.uk/images/how-to-get-free-unlimited-robux_GM431946152.pdf
    • http://brinicombe.co.uk/images/free-minecraft-skin-creator_GM479516143.pdf
    • http://brinicombe.co.uk/images/minecraft-hack-app_GM479516143.pdf
    • http://brinicombe.co.uk/images/free-robux-only-username_GM431946152.pdf
    • http://brinicombe.co.uk/images/free-spin-sites-for-coin-master_GM406889139.pdf
    • http://brinicombe.co.uk/images/is-roblox-free-on-ps4_GM431946152.pdf
    • https://youtu
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000487b.bin
15d78df883b4c6b8dc7af13e1ecb7319584df19094a7a69c84682b4ae3b4ed36		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x487B 24524 bytes
font_01_sfnt_off00008050.bin
8c5d9bcb386d88c7f99323d8d482e46ea21dea038a5b842744dd5d39b26b2c44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8050 2856 bytes
font_02_sfnt_off00008a27.bin
d3d1d430428c73896de9795e5eeef6e82810e36860bb7f8fcd97e9577ce89645		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A27 18384 bytes

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