Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae539a56cf06ea53…

MALICIOUS

PDF

364.6 KB Created: 2015-08-29 01:20:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ea3922cb06ed535dd0690dadea14c2c3 SHA-1: cdf2a3b2471a6ffca559d81c97a02f323e2e3a2a SHA-256: ae539a56cf06ea53a1a884553a8f0e020cc72ca5abbf0bc22ff552077123d397
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, http://botcraftman.ru/. This indicates the document is likely part of a phishing or malware distribution campaign. No scripts were extracted, and the document body was unreadable, so the primary evidence comes from the embedded URL and heuristic firings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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%B2%D0%B8%D0%B4%D0%B5%D0%BE%D0%BF%D0%BB%D0%B5%D0%B5%D1%80+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817974_plan__vospitatelnoy__rabotuy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817559_gorono__ozersk__yelektronnuyy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817457_kak__vosstanovit__windows_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005742b.bin
eedc2964a7c3be2c191b4e08185d64ef7a7d0a1f982db714bc0ff77f413a1a23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5742B 7364 bytes
font_01_sfnt_off00058964.bin
250015125119ba295e81fef37ccd732792fe28c7e960ff2baae9ab109855793d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58964 13536 bytes

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