Malicious PDF — malware analysis report

Static analysis result for SHA-256 13986f6ea3c77d1c…

MALICIOUS

PDF

358.0 KB Created: 2015-08-27 09:52:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0d3ded78c1f2418a90e34ef1a6d7c931 SHA-1: c8ca3644861919ddc8d909182030f6294730fe51 SHA-256: 13986f6ea3c77d1c87b0ada02f21cb0e0eb85e5988991c43dc41ade7b238a399
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector, http://botcraftman.ru/. This indicates the document is intended to lure users to a potentially harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of the malicious URL is a strong indicator 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%BC%D0%BE%D0%B4%D1%8B+%D0%B4%D0%BB%D1%8F+cities+xl+2012&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771805_portfolio__dlya__nachalnuyh_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771766_nero__6__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772031_blank__platezhnoy__vedomosti_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005501b.bin
f804e9cf1651d02f70c61d6f91a43409725cc5e4bf3b47d91de9de128229268f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5501B 9540 bytes
font_01_sfnt_off00056b38.bin
bc73057a4cf011c78f95effe9a034aa71e742071da0599c9498dcdd3df5f653e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B38 14744 bytes

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