Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b5af73b2324d14…

MALICIOUS

PDF

369.3 KB Created: 2015-08-26 09:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 8e88d339e8578872a65d0b217beb579d SHA-1: 118e5593a02200c72791a08f4ea97c8829765f14 SHA-256: 22b5af73b2324d14360e51d70a497b706fb7dafcbf0016cdcb90e1f1a9af7b0f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'http://botcraftman.ru/'. This indicates the document is designed to lure the user to a malicious site. ClamAV also detected the file as 'Pdf.Dropper.Agent-9040005-0', further supporting its malicious nature. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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-9040005-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9040005-0
  • 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=vaha+%D0%B4%D1%8D%D0%BF%D0%BE+depo+kolibri+kavabanga+%D0%BD%D0%B5+%D0%BC%D0%BE%D0%B3%D1%83+%D0%B1%D0%B5%D0%B7+%D1%82%D0%B5%D0%B1%D1%8F+%D1%82%D0%B5%D0%BA%D1%81%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751602_biznes__plan__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751689_kassandra__klyer__gorod_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751460_skachat__renoise__191_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057b46.bin
4351def79c841ca90fb2a5866a23ab97cfdb02d0115c0b788ebe43af235bca0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B46 10844 bytes
font_01_sfnt_off000599aa.bin
e7f40d008cd4a424f060aed917e47b37549735a7487f1c051fdac7b858a3b0fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x599AA 14144 bytes

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