Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a3f6ff12d7fa1c…

MALICIOUS

PDF

35.1 KB Created: 2021-07-08 05:36:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bf0aa0bf0de48f13e4c3728612e604c7 SHA-1: abdf2c76576851d272d83deff23b8ab56bb73588 SHA-256: 82a3f6ff12d7fa1c7463832ed2add90dd69300c8a8a5304c21b519cde3d39f9a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs that link to sites offering game hacks and cheats, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_LINK_FARM' suggests a large number of these links are generated to appear as legitimate content, further supporting a malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the ML classification strongly suggest this document is designed to lead users to malicious downloads.

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/406889139/coin-master-hack-online-game-hack
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-on-ipad_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-spin-link-coin-master-today_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-unlimited-coin-master-online-tool_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-roblox-credit-for-free_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/earn-free-robux_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-hack-xyz-download-free_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-robux-on-ipad_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/minecraft-windows-10-edition-free_GM479516143.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/hacks-de-roblox-para-descargar_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/new-free-spins-coin-master_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/minecraft-free-reddit_GM479516143.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-roblox-codes_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/easy-robux-generator_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-hacks-on-minecraft_GM479516143.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/freerobux-co_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-roblox-script-exector-september-2021_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-hacks-account_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/when-is-rovive-on-roblox-gonna-be-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_off000032fa.bin
1fbc812dfe2e2c4bdb5f28f1376133c8aec0e4b91d28f877d565a2b4fb71f872		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32FA 23196 bytes
font_01_sfnt_off00006729.bin
cc443b3e5e9939834b16353350763c191a3601af963dfecf81ceca0ba0d95e52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6729 18080 bytes

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