Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5df74f6b2e18a21…

MALICIOUS

PDF

374.1 KB Created: 2015-08-26 10:25:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b47940142ef371012084a9e6c7724372 SHA-1: 33b2fc664f826cf9791dc1de297e081d3531e817 SHA-256: b5df74f6b2e18a218826d0f336581bbdc3072d04939b49c1e61222caa3e3a74c
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates the document's primary purpose is to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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%B5%D0%BB%D0%B5%D0%BD%D0%B0+%D1%81%D0%B0%D0%B7%D0%B0%D0%BD%D0%BE%D0%B2%D0%B8%D1%87+%D1%82%D1%80%D0%B8%D1%81%D1%82%D0%B0%D0%BD%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751983_skachat__film__farforovaya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752193_grigoriy__leps__tekstuy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752601_dogovor__na__izgotovlenie_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058f91.bin
06368b4fb813c4a1deca05b0ac7d8e95b4034995e05cf2fb9bfabe101d822327		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F91 8368 bytes
font_01_sfnt_off0005a5d2.bin
7abdd44e471d15a084accac1d1964b6714d979c7d5b3f4dd2fff31ca3bf1935b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5D2 17032 bytes

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