Malicious PDF — malware analysis report

Static analysis result for SHA-256 269619d5c372a735…

MALICIOUS

PDF

41.7 KB Created: 2021-05-13 21:01:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 89d31dd4d03604486a13bb94cfcd3745 SHA-1: da46bb17b136f99f1c9ba679c2d8520501bd333f SHA-256: 269619d5c372a735ee7457f1eb538f4179b0873e8947e63020b0502373551484
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to websites offering game-related cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a lure to download potentially malicious content or visit further compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/how-to-block-someone-on-coin-master-game-hack
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/minecraft-pe-apk-free-download_GM479516143.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/coin-master-hack-software-download_GM406889139.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/how-to-get-free-robux-codes_GM431946152.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/free-spins-coin-master-links-blogspot_GM406889139.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/get-free-robux-info_GM431946152.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/coin-master-hack-tool-download_GM406889139.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/roblox-free-items_GM431946152.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/minecraft-free-download-windows_GM479516143.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/minecraft-menu_GM479516143.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/free-spins-on-coin-master-game_GM406889139.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/official-coin-master-free-spins_GM406889139.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/coin-master-free-coins--spins_GM406889139.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/free-roblox-hack-us_GM431946152.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/coin-master-village-4_GM406889139.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/roblox-executor-free_GM431946152.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/coin-master-free-400-spin-link_GM406889139.pdf
    • http://jpschoolnewdelhi.com/uploaded_files/userfiles/files/coin-master-free-spin-realme-products_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049a3.bin
8625ce01c75726b7a1425e36292fedf5e56cfc590791854aff3ea9e6c72a3756		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49A3 24216 bytes
font_01_sfnt_off00008054.bin
180049bf979394b6925be42ca29b0bcd3c26272f9b9e4d5497faafb59638d297		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8054 18432 bytes

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