Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce04853242f7ee1…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 05:46:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b18f81fdc8ef322765a75c6bc6e31d99 SHA-1: bb664c62b40c77edfcc57715525d667ee40ca9bd SHA-256: 1ce04853242f7ee1ee10d94052f1d1e44c9cb6fd85d5142145c72423f5a0753b
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on domains suggesting the distribution of game hacks and exploits. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these external links, and the 'ML_NYX_PDF_MALICIOUS' model strongly classified it as malicious. The presence of a download button lure further supports the malicious intent of directing users to download potentially harmful content.

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/scripts-for-hacks-roblox-game-hack
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hacks-exploits-2021_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/roblox-da-hood-hack-or-glitch_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hack-generator-no-download_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • http://pustaka.fkm.unand.ac.id/repository/promotion-code-for-free-robux_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/get-free-robux-no-human-verification_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/tuto-cheat-we-are-devs-roblox_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/can-you-make-a-roblox-game-for-free_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/free-roblox-user-and-password_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/free-roblox-font-generator_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hacked-place-database_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/roblox-vehicle-simulator-codes-free-lamborghini_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/free-robux-no-hack-2021_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/lin-for-free-robux_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/free-roblox-deadpool-suit_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/how-to-hack-dayz-roblox_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/hacks-for-roblox-dead-locked_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/roblox-how-to-get-robux-hack_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/free-roblox-game-card-generator_GM431946152.pdf
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hack-client_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031b7.bin
08f2b37c35d460861c7106141c96311d582352f13fc951c8af7395cc217c0dc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31B7 22288 bytes
font_01_sfnt_off00006302.bin
a5198b3e3e9cc4afecb29b329c36818df131261dc970c278a9057ab4de6ace89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6302 19220 bytes

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