Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd304187da158786…

MALICIOUS

PDF

361.0 KB Created: 2015-08-25 22:11:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c8a486b0def8e780ae4567aa6c4bd280 SHA-1: e9f3fc8bc2788b0e7c1fb2e19773904e2bca2cfb SHA-256: dd304187da15878623f34e702a1e35c4ce9418b70912604f86e68b10d53cf3d4
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 link to known malicious redirector infrastructure. The ML classifier also flagged the document with high confidence. The embedded URL points to botcraftman.ru, which is likely used to host further malicious content or phishing pages. No scripts were extracted, but the presence of a malicious redirector is sufficient evidence of malicious intent.

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%BC%D0%B0%D1%88%D0%B8%D0%BD%D1%8B+%D0%B4%D0%BB%D1%8F+3d+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%82%D0%BE%D1%80+227+%D0%B4%D0%BE%D0%BC%D0%B0%D1%88%D0%BD%D1%8F%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740630_skachat__os__windows_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740603_zelenuye__stranicuy__pleshakov_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740652_skachat__windows__7_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005576c.bin
17af7fa0220088ad50e826acab54777c7707f1352871a407cdf37fb10c4973fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5576C 8524 bytes
font_01_sfnt_off0005708c.bin
bd180f25b0568625820a5a3fe7dfa5528619fe14103024221b0672f46f8a0760		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5708C 16756 bytes

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