Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b959729163feec1…

MALICIOUS

PDF

381.1 KB Created: 2015-08-27 23:50:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ebe776d89df538502fa8b35f3daead17 SHA-1: c352aea4a6bba78a0560d37502f4b219a7c05571 SHA-256: 5b959729163feec1c18894423a3e8c049ebfd1df09362782dec6c3e2090d5d47
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D0%B3%D0%BE%D0%B2%D0%BE%D1%80%D1%8F%D1%89%D0%B8%D0%B9+%D0%BA%D0%BE%D1%82+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD+java&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788152_filmuy__na__telefon_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787869_avtovokzal__krasnodar__2_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787987_shema_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a9f9.bin
15a4715e8a5a62641d25c749e7e10cd4f14797a127306eff50ea435ebac1d728		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9F9 11168 bytes
font_01_sfnt_off0005c8de.bin
ceffea37c8d499c9960fbd0f1f6daa889f648d94029c646bccb9980489d49bd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8DE 14176 bytes

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