Malicious PDF — malware analysis report

Static analysis result for SHA-256 b081280e0a05c30e…

MALICIOUS

PDF

362.1 KB Created: 2015-08-24 00:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c34a612f53777541a5496e845d915c9c SHA-1: d1e5b7762cea54d152c7dda89cb92f9e791ad538 SHA-256: b081280e0a05c30e82a44341b7a23a50763e70899e02e4a2c3d4a0cc32881a84
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is likely the initial stage of a phishing or malware delivery chain. No scripts were extracted, and the document body was unreadable, but the presence of the malicious link is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%B8%D0%B9+%D0%B4%D0%BB%D1%8F+%D0%BB%D0%BE%D0%B3%D0%B8%D1%81%D1%82%D0%BE%D0%B2+%D1%83%D1%87%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693650_basseyn__miyet__zelenograd_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693276_skachat__mod__mafiya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693513_tekstuy__dlya__chteniya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055d14.bin
a5e4781dd9a5d7ed323804747dce031511051821d58f8e94080a0ff5d5cb696c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55D14 11072 bytes
font_01_sfnt_off00057c0e.bin
4ed3f11344ba40ca0b4d65075124b0f2d8a358e2cd5d62a8ce9e54b0241c5b9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C0E 14160 bytes

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