Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1bfe3a1b52de69…

MALICIOUS

PDF

35.5 KB Created: 2021-06-27 10:16:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cfc22ae3724b7a7d2086ee9be6368eb1 SHA-1: 1901a7a8c0af85591efc66a9bef4575fe8d1a796 SHA-256: be1bfe3a1b52de69d8e604fefa650507af1b246312ecbf0ce6c551f6963fc96c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a document body that promotes "hacks" and "free" items for games like Roblox and Coin Master. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, and the ML_NYX_PDF_MALICIOUS model strongly suggests malicious intent. The primary attack pattern involves luring users to potentially malicious websites via these links, which could lead to credential harvesting or further malware infection.

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/how-to-create-vip-server-roblox-free-game-hack
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/coin-master-free-coins-hack_GM406889139.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/roblox-free-robux-google-chrome_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/how-to-get-anything-in-the-roblox-catalog-for-free_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/roblox-google-chrome-robux-hack_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/todays-free-spin-and-coin-links_GM406889139.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/roblox-gift-card-free-no-human-very-or-survey_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-robux-and-tix-generator-2021_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/legit-coin-master-hack-october-2021_GM406889139.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/freerobux-hack-us_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/roblox-windows-10-hack_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/roblox-hacked-version_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/coin-master-free-spin-now_GM406889139.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/robux-code-2021-free-game_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-roblox-hacker-no-human-verification_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/how-to-install-minecraft-for-free_GM479516143.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/can-u-get-roblox-on-ps4-for-free_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/how-to-hack-someone-on-roblox_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003052.bin
169a20a2bf6704a92860b5cdf69914e5a4f6db6a9e009c62e6dd32bd8cac0b08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3052 23172 bytes
font_01_sfnt_off00006477.bin
ba8814e7a47ad279cdb222ec853f4136741ad5c6aa462806c5420902d0e1b82f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6477 19464 bytes

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