Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f5edc79876bf0a9…

MALICIOUS

PDF

349.5 KB Created: 2015-08-26 20:37:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ad7114b678b77d5ae676509413762357 SHA-1: 8cc11e44b19b930dd1179dce5f0233db53617f2a SHA-256: 9f5edc79876bf0a9d1231a1e7cfa0e6b29017a7dde20f7ae54a0ca2332e34b60
90 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 critical heuristic indicating a link to 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 unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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%D1%82%D1%80%D0%B0%D0%BD%D0%B4%D0%B5%D0%B4+2+%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//4763/4763540_albom__dlya__logopeda_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4764/4764048_skachat__mod__fps_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763282_klyuch__k__igre_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053188.bin
fd4b4efd9c6d87e1bd2f2265485862b8222d550a8c6e2e4ead89006e3b51b410		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53188 7912 bytes
font_01_sfnt_off00054865.bin
ca359b99e72c5c5fc229a1effe2f54e88b299c8aaa57c911a2d61a76fec8adca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54865 15120 bytes

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