Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bef6ecd490d6311…

MALICIOUS

PDF

373.6 KB Created: 2015-08-25 15:15:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a63be15d481dd58124001bb8773afa1f SHA-1: f2feb62e776bee4af4ea4d0812be5a8247d8bd15 SHA-256: 0bef6ecd490d631197cd3730cdc1db33ac824aa49e118b7c7dfee9c08e9cae98
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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%BF%D1%80%D1%8F%D0%BC%D0%BE%D0%B9+%D0%B4%D0%BE%D0%B3%D0%BE%D0%B2%D0%BE%D1%80+%D1%81+%D1%80%D0%B5%D1%81%D1%83%D1%80%D1%81%D0%BE%D1%81%D0%BD%D0%B0%D0%B1%D0%B6%D0%B0%D1%8E%D1%89%D0%B5%D0%B9+%D0%BE%D1%80%D0%B3%D0%B0%D0%BD%D0%B8%D0%B7%D0%B0%D1%86%D0%B8%D0%B5%D0%B9&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731059_skaner__yepson__1270_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731912_akunin__ognennuyy__perst_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731565_skachat__rsp__2013_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058710.bin
b07e1e4bd39e02ec61f8a5b1f6b3af6868911db4477b3802a2a55b2d7fae7aa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58710 11204 bytes
font_01_sfnt_off0005a66a.bin
8fbe2564a80f08c2f4428f70e9414e8a01a85c6981600a0cc12efe12be9fc2ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A66A 15592 bytes

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