Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8fe76a2711a53d9…

MALICIOUS

PDF

343.4 KB Created: 2015-08-26 10:11:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 016709c887f79bceb39d082f1f6f8561 SHA-1: 1a0ac4d90891982395506a91d461334d7e944e58 SHA-256: d8fe76a2711a53d9eb67114a3015a7eb9497e2ff676809d0ebc561a5c6c4f3d3
90 Risk Score

Malware Insights

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

The PDF contains an embedded 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. No scripts were extracted, and the document body was heavily obfuscated, preventing further analysis of the specific lure. The primary attack pattern involves directing the user to a malicious site via the embedded URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%B4%D0%B5%D0%B2%D0%BE%D1%87%D0%B5%D0%BA+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BF%D0%BE%D0%BB%D0%BD%D1%8B%D0%B5+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D0%B8&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752276_skachat__pesni__gruppuy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751648_andrey__bandera__diskografiya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751688_flesh__pleer__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051b87.bin
2fcbfc26d0d63f4e27cdfb5758c9b74f37ae3aa6fbf37877b4055dde75c5b9e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51B87 8100 bytes
font_01_sfnt_off00053314.bin
0ac7c172da48bb847466002670644537ea1f77a8e0c2e36fcac82af4e3d18306		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53314 13312 bytes

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