Malicious PDF — malware analysis report

Static analysis result for SHA-256 afebcc5ffd8c85ed…

MALICIOUS

PDF

357.8 KB Created: 2015-08-29 01:56:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f77f1399f85c7051aa3b0cc648f00010 SHA-1: 01b504114451519c52930c10bb741cc1672faa38 SHA-256: afebcc5ffd8c85eda07631b5dd2cec1e1e8c1df862293e6baa4383ebc0e347d5
90 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The embedded URL is likely used to deliver a secondary payload or redirect the user to a phishing page. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BA%D1%83%D0%B4%D0%B0+%D0%B2%D0%B2%D0%B5%D1%81%D1%82%D0%B8+%D1%87%D0%B8%D1%82+%D0%B2+%D1%81%D0%B0%D0%B1%D0%B2%D0%B5%D0%B9+%D1%81%D0%B5%D1%80%D1%84%D0%B5&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817924_iznasiloval__druga_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817595_kod__da__vinchi_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818542_avtovokzal__kamuyshin__raspisanie_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000552b3.bin
1d345e8fdadb191cd5e7b6182e6beeb1731474e0a8f06b04fe4c729f113cee80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x552B3 9796 bytes
font_01_sfnt_off00056dd6.bin
323acc4a2032f60544564ead882088e3caac3bca8a5c95dacbf46af4deaa7ab6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56DD6 13396 bytes

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