Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c6b3663a75ec4cc…

MALICIOUS

PDF

361.7 KB Created: 2015-08-21 09:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 29f6a930e49a12067f0e696ad1fe8a74 SHA-1: 2195fefaece5c2b2b775b9c3b3f3caba396b36ca SHA-256: 9c6b3663a75ec4ccd25bacf6970bbf28d9127f356da32ad9d02f521e7c866ace
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and appears to be corrupted or intentionally unreadable, suggesting it is not intended for human consumption but rather to host the malicious link. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://botcraftman.ru/?lip&keyword=mount+and+blade+%D0%BA%D1%80%D0%B5%D1%81%D1%82%D0%BE%D0%BD%D0%BE%D1%81%D1%86%D1%8B+%D0%BF%D1%83%D1%82%D1%8C+%D0%BA+%D0%B8%D1%81%D0%BA%D1%83%D0%BF%D0%BB%D0%B5%D0%BD%D0%B8%D1%8E+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654688_esli_s_rebenkom_trudno_petranovskaya_skachat_fb2.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654700_scenariy_otchetnogo_koncerta_vokalnogo_kollektiva.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654689_skachat_igru_metro_2034_cherez_torrent_besplatno_na_russkom.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055e12.bin
46b42c03ce0d62fad9bb89c24c2aa170818533080c257817a5f88e64379c68e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55E12 8920 bytes
font_01_sfnt_off000576a9.bin
940d6507381a8801b2efa4479b6a0d185a050909ea843629c3a8d6baf9090b6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x576A9 15568 bytes

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