Malicious PDF — malware analysis report

Static analysis result for SHA-256 9702cb221a29ba42…

MALICIOUS

PDF

354.8 KB Created: 2015-08-27 09:59:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b4e00433c726d86b83b6a7f24ab567e3 SHA-1: 0b14e5c1b1a17177854a0634caca5c80091e3adb SHA-256: 9702cb221a29ba428cc9e2a51d5483f0d26ed1f43f1ad8fd1bd37e19dae2a120
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL http://botcraftman.ru/... is confirmed as a malicious redirector. No scripts were extracted from this sample, but the presence of the malicious link strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%91%D0%B0%D0%B3+%D0%BD%D0%B0+%D1%81%D0%B5%D1%80%D0%B4%D0%B5%D1%87%D0%BA%D0%B8+%D0%B2+%D0%B8%D0%B3%D1%80%D0%B5+%D1%86%D0%B5%D0%BB%D1%83%D0%B9+%D0%B8+%D0%B7%D0%BD%D0%B0%D0%BA%D0%BE%D0%BC%D1%8C%D1%81%D1%8F&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771988_1_____.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771865_poslednie__novosti__na_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772243_prozhit__zhizn__soderzhanie_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054a25.bin
65bfe658f248d18e8f52191a6a47ae43453da824cd8507e4d14255aa880d3af8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A25 8116 bytes
font_01_sfnt_off000561a8.bin
7fe7cc09c36ef8cd619fa794300603c50fdc5fbba1eec9f661ad81169038d837		 pdf-font-stream PDF embedded font (sfnt) at offset 0x561A8 13140 bytes

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