Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d62a8a36d0c3e9…

MALICIOUS

PDF

339.2 KB Created: 2015-08-28 17:50:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 78f66c5b660ef0b62beccfea2416c4b1 SHA-1: 1faa96db773d5f8f704d79b9420ccccdef268bf6 SHA-256: 26d62a8a36d0c3e9e81cf19a68703c00f7433291c617d3367391571f1dd49dd6
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. ClamAV also detected this file as Pdf.Dropper.Agent-8073830-0, indicating it is a known dropper. The document body is heavily obfuscated and unreadable, but the presence of the malicious URL is sufficient to determine the attack pattern. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8073830-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8073830-0
  • 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%BA%D1%80%D1%8B%D0%BB%D1%8C%D1%8F+%D0%B4%D0%BB%D1%8F+%D1%81%D0%B8%D0%BC%D1%81+3&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809132_skachat__besplatno__koncert_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809164_molokososuy__6__sezon_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809493_skachat__launcher__s_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000508a5.bin
3034482a2c10b4ec0ce2f31922cc9aa450b049711bb2f0650420117f2b4313d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x508A5 7856 bytes
font_01_sfnt_off00051f44.bin
fe22cd0a33b6f3d574d873dd4287fafc155b28ad93f20220c8e702bb18d34094		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51F44 14568 bytes

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