Malicious PDF — malware analysis report

Static analysis result for SHA-256 59d61e8b5e1b6575…

MALICIOUS

PDF

35.0 KB Created: 2021-07-07 06:27:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: dd620a58020e17911c92cdca50c63637 SHA-1: 93e585b707a6bccb6887a75fa66e777c7127dd03 SHA-256: 59d61e8b5e1b657531649abdaa670681ea058e386382bc1aa6c98c530d082114
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promotes free in-game currency and hacks, indicating a phishing or scam attempt. The heuristic findings confirm the presence of a link farm and external URIs, suggesting the document is designed to redirect users to malicious sites. No scripts were extracted, but the overall structure and content point towards a social engineering attack.

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.tw/app/431946152/free-robux-not-a-scam-game-hack
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-for-free-on-phone_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-free-spin-app-iphone_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-card-hack-2021_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/real-free-robux-generator_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-hackcom-xyz_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/hack-coins-pizzeria-roleplay-remastered-roblox_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-maps-pe-free-download_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/easy-robux-generator_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-free-shields-on-coin-master_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-games-online-free-no-download_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/take-anyones-robux-hack-created-by-robuxian_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-java-free-trial_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-roblox-svg_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-computer_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/roblox-hack-download-mac-free-robux_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/hack-coin-master-using-pc_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/give-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032b7.bin
cc61501e2e9594c3263b886e27eb765a1e2b2e8dc8ab2d821250230cb96b8508		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32B7 22072 bytes
font_01_sfnt_off00006392.bin
14e01471e6a07db1a68c511ee00ed8ed146bd69de2dd1952b6465b95f794ce32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6392 19080 bytes

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