Malicious PDF — malware analysis report

Static analysis result for SHA-256 749321587f3582ca…

MALICIOUS

PDF

338.6 KB Created: 2015-08-27 23:58:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 283851b04d21085b05add555ac200430 SHA-1: 33709c216cdee87ea52026c21be20acdf7d67a67 SHA-256: 749321587f3582ca0da3ac60b1fb5ef95119b3b233ca75fac4ec8a6a6d128b48
92 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely part of a phishing or malware distribution chain. No scripts were extracted, and the document body was heavily truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9545

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%81+source+v34+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788249_goluye__zhenschinuy__v_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788330_deyl__karnegi__kak_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787814_devushka__s__tatuirovkoy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005083a.bin
5c3b7dd2d213e128130138008eb521ae918e5872358320edb82c4de2373d43f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5083A 9340 bytes
font_01_sfnt_off000522b7.bin
f11fde568485f1aefc2a49016efb44e49d6e85671869dbea6e50e882e24bba53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x522B7 13092 bytes

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