Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fb6f26e674f109f…

MALICIOUS

PDF

351.1 KB Created: 2015-08-24 19:07:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 8bbb63fcf8edf032e6d18b452cd61f04 SHA-1: 0983baa939ea3b88621cc403a85259db08980f84 SHA-256: 5fb6f26e674f109f2a64967a68b8a1375d56db7eea1b88d0a4a794115db0a957
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL is likely part of a phishing or malware distribution scheme, aiming to lure users 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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%BB%D1%8E%D1%87%D0%B8+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B8+%D0%B2%D0%B8%D0%BD%D0%B4%D1%8B+7+%D0%BF%D1%80%D0%BE%D1%84%D0%B5%D1%81%D1%81%D0%B8%D0%BE%D0%BD%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4698/4698184_kontrolnuye__rabotuy__po_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4706/4706355_skachat__chit__na_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4704/4704645_smotret__tennis__onlayn_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000539e2.bin
8db5b786647efb1cf7c7c102aa7cbefbaa9f2d8f7837cb31f75202838e353279		 pdf-font-stream PDF embedded font (sfnt) at offset 0x539E2 8656 bytes
font_01_sfnt_off000552c3.bin
ebb7c35c2da20ebdacb8027a2e599a35b76846a640a9af94c8c0d3a197394be6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x552C3 12852 bytes

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