Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cdbb71e67857917…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 14:43:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5a157decc83f2da117eb16867c6e2b7d SHA-1: 2874ad8f4197a0e4796b8c5e780282ef87e87360 SHA-256: 5cdbb71e678579170e5ab5fa277c04c76a4c0fac63886fc610cb2e27625930b8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of numerous links suggests a link farm designed to redirect users to potentially harmful content. While no scripts were directly extracted, the PDF structure and extensive link farm are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/hack-hoogon123-on-roblox-game-hack
    • http://perpus.i2s-learning.com/repository/roblox-dominus-free_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/coin-master-hack-dot-xyz_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/setting-up-cheat-engine-for-roblox_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/easy-how-to-get-free-robux_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/roblox-hack-download_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/minecraft-java-edition-for-free_GM479516143.pdf
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-hack-ios_GM406889139.pdf
    • http://perpus.i2s-learning.com//repository/coin-master-hack-download-android_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-on-pc-2021_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/free-roblox-girl-hair-not-a-model_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/minecraft-font-free_GM479516143.pdf
    • http://perpus.i2s-learning.com/repository/free-robux-codes-not-used_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/coin-master-hacks-for-gold-cards_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/free-downloads-for-coin-master-daily-rewards_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/free-robux-no-download-no-verification_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/ways-to-get-robux_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/free-robux-hack-us_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/roblox-boxing-simulator-hack_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/how-to-duplicate-coin-master-spin-hack_GM406889139.pdf
    • http://perpus.i2s-learning.com//repository/free-cracked-minecraft-server-hosting_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fe7.bin
b6f33345547447cc452e69a56dc5d94d2a18dd57b761fdd889c9e726105ede66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE7 21908 bytes
font_01_sfnt_off00006088.bin
6bc167037e83ba4741da10c32d8ae91f9b1c65cf1d9529237e2c9766c5e8eebe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6088 19060 bytes

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