Malicious PDF — malware analysis report

Static analysis result for SHA-256 12350ca03aa8a0d7…

MALICIOUS

PDF

357.4 KB Created: 2015-08-26 10:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 689e7177a306bca6bff4f60e1aeb034e SHA-1: d079436a53be546ffbadc37625f18c1c8a793221 SHA-256: 12350ca03aa8a0d7964e456a1e720452d6cd6d5c2a8aa3beb900e63dae438ae9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of a malicious URL suggests the document is designed to lure the user into downloading a second-stage payload or visiting a phishing site.

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%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BA%D0%BB%D1%8E%D1%87%D0%B8+%D0%B4%D0%BB%D1%8F+kav6&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751904_klyuch__na__vindovs_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752345_skachat__igru__lara_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752323_konspekt__zanyatiya__minifutbol_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055092.bin
18a6e53d268ad352533f8121852c5df91848342e67dfd6931947647dd3ee1cb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55092 9040 bytes
font_01_sfnt_off00056a19.bin
b458e740f6a7b51b2cc58f7c14ff1cc1ea70dbeaa39855e24ab9a9ea4ad93f36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A19 13984 bytes

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