Malicious PDF — malware analysis report

Static analysis result for SHA-256 c186ca2d2484b1c3…

MALICIOUS

PDF

367.1 KB Created: 2015-08-24 00:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a82f67471266b073ab74025b6ce81d91 SHA-1: e4351af9cba248c7ad2d2acc620148067c58af55 SHA-256: c186ca2d2484b1c3fbf5f39050ef456af41573225a4f0db220c15de76951f0f8
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 URL, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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%D0%B5%D0%B9%D0%B7%D0%B0%D0%B6+%D0%B0%D0%BA%D0%B2%D0%B0%D1%80%D0%B5%D0%BB%D1%8C%D1%8E+%D0%BF%D0%BE%D1%8D%D1%82%D0%B0%D0%BF%D0%BD%D0%BE+%D0%B4%D0%BB%D1%8F+%D0%BD%D0%B0%D1%87%D0%B8%D0%BD%D0%B0%D1%8E%D1%89%D0%B8%D1%85+%D0%BE%D1%81%D0%B5%D0%BD%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693334_skachat__kartu__turcii_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694288_skachat__chit__na_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694324_avtoprobeg__chernoe__more_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000571c2.bin
1c350ae9a161d64bac11e9005315ba699aafc7b417b23ed6372dcbaf6f76238f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x571C2 8528 bytes
font_01_sfnt_off00058a7d.bin
42cde0f2445689bda2f8b7daf58565d423b79bcc8f27ffd2ba1b185de6509eb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A7D 15980 bytes

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