Malicious PDF — malware analysis report

Static analysis result for SHA-256 79651a014b38c58d…

MALICIOUS

PDF

398.6 KB Created: 2015-08-27 09:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9d5606cfe5b9b8488f756494b1fcd333 SHA-1: 8527709c45cce528bdb63adce0e23458e1a05714 SHA-256: 79651a014b38c58dfd2e9e18e7b6e01e874bdf19d0b4ee3fc1288ef4f8fad6a0
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link to botcraftman.ru. This suggests the document's primary purpose is to lure the user to this malicious domain. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BC%D1%83%D0%BB%D1%8C%D1%82%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D0%B2%D0%B8%D0%BD%D0%BA%D1%81+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+1+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771964_skachat__operu__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771930_oshibka__pri__vuypolnenii_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771849_skachat__detonate__12_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005f0dd.bin
c89fbdde0f8fe273453b52304c4aaaa5ab842135591f7e83b8ab342f43da8d13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0DD 8344 bytes
font_01_sfnt_off00060908.bin
8f33fa9545f75f7b54934a84a90c433d86df051709611af5499d8a3f2cf317cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60908 16116 bytes

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