Malicious PDF — malware analysis report

Static analysis result for SHA-256 21969359a4bccdff…

MALICIOUS

PDF

368.7 KB Created: 2015-08-21 09:31:13 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9f65cbce8e78ba785716ebae5ecbeb6a SHA-1: a78d66392cdc71236a4546962de2bb9e1a8c7ec0 SHA-256: 21969359a4bccdff3b73a71f7a2096276ec4b41fea8d2e02239635049bb940a7
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure. The ML classifier also flagged this PDF with a high confidence score. The primary attack pattern involves luring the user to click on the malicious link, likely to download further malware or redirect to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD%D0%BD%D1%8B%D0%B9+%D1%81%D0%BF%D1%80%D0%B0%D0%B2%D0%BE%D1%87%D0%BD%D0%B8%D0%BA+%D0%B4%D0%BE%D0%BC%D0%B0%D1%88%D0%BD%D0%B8%D1%85+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD%D0%BE%D0%B2+%D0%B8%D0%B6%D0%B5%D0%B2%D1%81%D0%BA%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654726_svodnaya_vedomost_po_zarplate_blank.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654914_windows_8_64_bit_originalnuyy_obraz_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654797_opisanie_obekta_zakupki_po_44fz_obrazec.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057684.bin
c92da09606ee176a723e725cd356320579faf0dbeed1ffaf73448d12c3b930bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57684 9616 bytes
font_01_sfnt_off0005921b.bin
18558f42c3e47dbe1692e17853a3a488cbf2f5de0eedb8e7a01cdc8525d407e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5921B 15364 bytes

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