Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c91ebb9796f5b57…

MALICIOUS

PDF

352.5 KB Created: 2015-08-24 22:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c6e63f90dc1093786c6a0954d8ba07d4 SHA-1: b6c790d6d91f9f7aeecc27d552ba9e0f9444b233 SHA-256: 4c91ebb9796f5b5762dec4ae833387df8aa536c504fda56c540ab2c569dd5e8d
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 infrastructure. The ML classifier also flagged this PDF with high confidence. The embedded URL is likely intended to lure the user to a site that hosts malicious content or attempts to phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%D0%B9%D0%BA%D1%80%D0%BE%D1%81%D0%BE%D1%84%D1%82+%D0%BE%D1%84%D0%B8%D1%81+2007+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4704/4704758_sbros__parolya__administratora_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4710/4710857_samouchitel__koreyskogo__yazuyka_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695225_dp__foto_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053da3.bin
22edb597327484ff6133af3ade170ef9da6aedd9ef16600d5be76d78e2037a71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53DA3 8380 bytes
font_01_sfnt_off000555e3.bin
9aedb8b7cd58aab21648a37675848be7154398e4a52023146a00a23c01654485		 pdf-font-stream PDF embedded font (sfnt) at offset 0x555E3 14412 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.