Malicious PDF — malware analysis report

Static analysis result for SHA-256 736dd447b45b92ab…

MALICIOUS

PDF

33.8 KB Created: 2021-06-19 01:27:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8bbca26fed7ab2d8fc79b1b11aec0fd1 SHA-1: 1f2517b1770cecb13db67ff589aa3de58c2995b8 SHA-256: 736dd447b45b92ab393810eb03681ea459f7692ec8a3725749e4bea4ff279b92
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded URLs, many of which are structured as SEO-optimized links pointing to game-related content, suggesting a link farm or phishing lure. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a link farm indicates an attempt to redirect the user to malicious content, likely for exploitation or further malware delivery.

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/insert-gear-roblox-hack-game-hack
    • http://pustaka.fhuk.unand.ac.id/repository/how-to-save-in-free-draw-2-on-roblox_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/free-full-colour-brown-pant-roblox_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/how-to-get-free-robux-inspect-youtube_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/how-to-get-free-roblox-music-2021_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/when-is-vesteria-roblox-predicted-to-be-free_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/dexen-hack-roblox_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/free-minecraft-worlds_GM479516143.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/minecraft-realms-free-trial_GM479516143.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/how-do-i-get-minecraft-for-free_GM479516143.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-money-hack-no-verification_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/www-roblox-cheat-us-limited-amount_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/rpg-world-cheats-roblox_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-fly-hack-2021_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/5-get-unlimited-free-robux_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/how-to-get-robux-on-roblox-for-free-2021_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-dll-hacks-for-free-download_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/how-to-hack-games-in-roblox_GM431946152.pdf
    • http://pustaka.fhuk.unand.ac.id/repository/supreme-t-shirt-roblox-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e95.bin
3e7a4ef07042659c13418b948b59ab435c7d33ef57ac5eb91f15bf39863c0519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E95 22132 bytes
font_01_sfnt_off00005f7d.bin
8013775ef7ce104deedae5d718817651536e74082f098a2fe367cb7c97b3d130		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7D 18760 bytes

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