Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f13a48e23383e5e…

MALICIOUS

PDF

356.5 KB Created: 2015-08-27 23:44:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 5cb238ad1ff4671ce5c7227ee953eca2 SHA-1: afd1dc5cfd7418a7f0f40029f26420d7d9172d56 SHA-256: 5f13a48e23383e5ed623dcf35b771c18b97716e172715b236a1565e3a0acae59
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, disguised with keywords related to downloading drivers. The ML classifier also flagged this PDF as malicious. The embedded content, though heavily obfuscated, likely facilitates the redirection to a malicious site for payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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=canon+mf3010+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80+windows+7+x64+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787984_skachat__film__tn_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787768_skachat__muzuyku__besplatno_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787824_skachat__univer__novaya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000542dd.bin
69db0b8a8bd87f428480b8c8e737bcfbe340c43b06e5e645c3a648ec16eedb17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x542DD 11012 bytes
font_01_sfnt_off0005617d.bin
3398a475143f5a2fe193fe24df04db7bad312d0cb9cb8fe2818864b4ce3868d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5617D 16076 bytes

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