Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa58ced52c6b28e7…

MALICIOUS

PDF

359.4 KB Created: 2015-08-28 00:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 26eeef7dce7e413eb2429030bf4ea945 SHA-1: 35c248b3a46882d77f61e23258b8fda9cb28ca4a SHA-256: aa58ced52c6b28e773c0619d007693eaf8ddf2b58c8d2468130b878dad9b32ab
92 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/, which is designed to lead users to harmful content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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%BF%D0%B0%D1%80%D0%BA%D1%83%D1%80+%D0%BC%D0%BE%D0%B4+%D0%B4%D0%BB%D1%8F+gta+san+andreas&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788300_zhivuye__oboi__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787986_diskaid__skachat__besplatno_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788403_yelektro__shema__izh_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055195.bin
fe5bf4e84d20e5e6e387d6cce74d7dc7aeba687181b0bc86f99bea2d0d542958		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55195 8968 bytes
font_01_sfnt_off00056af5.bin
c3697e1cfb8e61f03fc1008b22b10cea0134f943ef6aeb339eb9651d713f6f8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56AF5 16524 bytes

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