Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd330e38e403cab…

MALICIOUS

PDF

362.2 KB Created: 2015-08-28 11:39:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ff0f5081be932d2cc208aa94ee4ee9b9 SHA-1: 64c379e53bdac96e4cc7512ffff04cfb6190b315 SHA-256: 0bd330e38e403cabceb25da1110b18583eb293b5b7d3dc32c51b1c306951160a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftcraftman.ru/..., is the primary indicator of compromise and likely leads to a malicious site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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=brick+bazuka+chemodan+clan+%D0%B5%D1%88%D1%8C+2012+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802369_slavyanoariyskie__veduy__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802371_shema__ultrazvukovogo_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802379_skachat__deadpool_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055941.bin
e60d5cb1cf27b91925400afb51fc1e785f5a5b0c33c422c3ef06a04240eb64b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55941 10264 bytes
font_01_sfnt_off0005758e.bin
289614c7711ea329ec8be3ad90ed9c3dc430c8d01974f77f606e31875b66f803		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5758E 17264 bytes

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