Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc5e07bf85a09197…

MALICIOUS

PDF

354.8 KB Created: 2015-08-25 22:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 025893fc21d9481c9a4be014ca3387d9 SHA-1: 2734db09b63a31eb7eda821522e0096c087dc7c1 SHA-256: bc5e07bf85a091977b6ece87af03c94fdb1a4148b0c678efb96960ec21589e85
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. The document body appears to be obfuscated or corrupted, preventing a clear understanding of its specific lure, but the presence of the malicious URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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%BF%D1%80%D0%BE%D1%88%D0%B8%D0%B2%D0%BA%D1%83+%D0%B4%D0%BB%D1%8F+samsung+gt-c3312&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740570_yelektronnaya__biblioteka__globus_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740663_uzoruy__v__vord_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740671_gdz__po__geometrii_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053f64.bin
71227dfdfffc7e88ee4ae50790d4a192f2871726f8993567739eddd1df9163b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53F64 10088 bytes
font_01_sfnt_off00055b7f.bin
c26d52d0d155ac8efef8c708698bd60b7c2b5eae87cf1bbeca1664c629c5a13f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55B7F 15328 bytes

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