Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad0214f1f2a9a872…

MALICIOUS

PDF

281.8 KB Created: 2015-08-24 03:32:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 19c8629834682eac7176fb705576e041 SHA-1: 7d897313819c12ec2a18500145db477f04a0e317 SHA-256: ad0214f1f2a9a87275136fdee1e6a65cc7d6a89454ae3b1054819f60c08641d8
90 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. This heuristic firing indicates the document is designed to redirect users to a harmful site. The ML classifier also flagged the PDF as malicious. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL is sufficient evidence for a malicious redirector attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6936

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%B4%D0%B5%D0%BA%D0%BE%D0%B4%D0%B5%D1%80+%D1%82%D0%B5%D0%BA%D1%81%D1%82%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694161_planix__home__3d_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695346_gitar__rig__5_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4696/4696923_horosho__buyt__tihoney_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000422c8.bin
30a31bf8d4d6956e312abd9a5f5ba1b4e57c6e3b938344bfcb845ffde31c94c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x422C8 7240 bytes
font_01_sfnt_off000437d1.bin
92e3aaf47a734871385a501165ef1bafa23700b1be5eee49dc0698dc5f482e71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x437D1 16296 bytes

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