Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed65bb12923a91eb…

MALICIOUS

PDF

352.4 KB Created: 2015-08-28 21:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a5296df157f4d19fa6ec3a7b15456a16 SHA-1: cb26fc654fb9ebba416c16e8f57301add94226c8 SHA-256: ed65bb12923a91eb7a3aa3265bb9adec92803740ded5ad24c75cad6767115741
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 a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for the attack pattern.

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%BB%D0%BE%D0%B2%D0%B8+%D0%B2%D0%BA%D0%BE%D0%BD%D1%82%D0%B0%D0%BA%D1%82%D0%B5+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810194_astrologicheskie__programmuy__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810480_skachat__rington__suyn_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809475_igra__dvigat__yaschiki_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054113.bin
184776a9cac39fc4bb4193c630c17ba5f08e2694fdd944e464c09facc89797c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54113 7752 bytes
font_01_sfnt_off000557cd.bin
ee17b5efa42c0660b42c91448930a7cd677df823eca17d6f999bae23b7d112f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x557CD 13276 bytes

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