Malicious PDF — malware analysis report

Static analysis result for SHA-256 92474392a3d3161f…

MALICIOUS

PDF

35.9 KB Created: 2021-06-25 13:22:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fa647f46e408c3552a7cd822be4e344f SHA-1: 296a63f4c79eb5373bff1fcbfea01c1f39b53663 SHA-256: 92474392a3d3161f416483faa998087051f726b765706118cf5eb9cd13b27263
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 presented as guides or cheats for popular games. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a coordinated effort to drive traffic to potentially malicious sites. The ML classifier also flagged this PDF with high confidence, indicating a strong likelihood of malicious intent, likely to trick users into downloading malware or engaging in scams.

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-hack-into-files-to-get-robux-game-hack
    • http://elib.acls-indonesia.com/repository/how-to-get-free-robux-2021_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/free-tiktok-fans-and-likes_GM835599320.pdf
    • http://elib.acls-indonesia.com/repository/best-free-roblox-outfits_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/coin-master-hack-version-33-2_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/how-to-hack-roblox-jailbreak_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/all-coin-master-spin-link-and-free-download_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/weird-roblox_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/microsoft-rewards-robux_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/hack-to-protect-village-on-coin-master_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/coin-master-free-link-facebook_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/free-robux-generator-for-roblox-2021_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/roblox-free-robux-codes-no-survey_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/coin-master-free-spins-today-daily-links_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/how-to-get-free-robux-easy-and-fast-on-ipad_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/free-gray-pants-roblox_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/roblox-help-free-robux_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/coin-master-app-for-free-spins_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/free-roblox-accounts-with-robux-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_off000033e4.bin
5abe63d5c13f8bc2800b6b2d62db6bd87a8f9cdd4837db0546332243d9ad480a
pdf-font-stream PDF embedded font (sfnt) at offset 0x33E4 22644 bytes
font_01_sfnt_off000066b4.bin
fbcce585069594e29c03a913fcebf019608af4ee219fe76b084c68f4db5a7df1
pdf-font-stream PDF embedded font (sfnt) at offset 0x66B4 19348 bytes