Malicious PDF — malware analysis report

Static analysis result for SHA-256 181a2fb0547009ba…

MALICIOUS

PDF

358.9 KB Created: 2015-08-28 12:02:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 97c3d2cec8e75d3513965e4b560889f9 SHA-1: 69dc487ffad476c6165aad56d5339904bb67401f SHA-256: 181a2fb0547009ba18706a0de914cab2cbdd8f388ab75a0cc0afe6f04dfc328f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. Although no scripts were extracted, the presence of a malicious URL suggests the document is designed to lure the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=%D0%BE%D0%BA%D1%81%D0%B8%D1%81%D0%B0%D0%B9%D0%B7+%D1%81+%D0%BC%D0%B0%D1%80%D0%B8%D0%BD%D0%BE%D0%B9+%D0%BA%D0%BE%D1%80%D0%BF%D0%B0%D0%BD+%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://img0.liveinternet.ru/images/attach/c/7//4802/4802722_veterinarnoe__svidetelstvo__forma_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802436_notuy__belorusskih_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802794_kakoy__tank__vuybrat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000555b2.bin
e9ee19dbc442aa2871fa9c8b48c06f90e098f8abd6877fc8a51fd3fdd8d6092f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x555B2 7944 bytes
font_01_sfnt_off00056c82.bin
8a4aeb285f4174a170cbf3df70ec9e8fa25178720cecac103660aa4a6a034ab1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C82 15340 bytes

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