Malicious PDF — malware analysis report

Static analysis result for SHA-256 1db63cc54a9f7c1b…

MALICIOUS

PDF

354.4 KB Created: 2015-08-27 23:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: bd86e62aac6526929db41fa843d9339b SHA-1: d78e86badcce0474af3ecb7a09dbb818186f9c5f SHA-256: 1db63cc54a9f7c1bbcc29673acae4691837cbf092e41789db72295d3cf7b86eb
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL `http://botcraftman.ru/?lip&keyword=%D1%81%D1%80%D0%B0%D0%B2%D0%BA%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%B2%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BC%D0%B8%D0%BD%D1%81%D0%BA&charset=utf-8` is the primary indicator of malicious intent. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%BF%D1%80%D0%B0%D0%B2%D0%BA%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%B2%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BC%D0%B8%D0%BD%D1%81%D0%BA&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787836_antivirus__avast__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787921_klyuch__k__igre_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787917_domashnee__zadanie__solfedzhio_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000545f4.bin
98e6b39d79ceb9a12576092193d62fe290fc17707656b250b9356790ad012d0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x545F4 7644 bytes
font_01_sfnt_off00055c41.bin
8bd15abab92f904647a8f2e852289e5703f96bf9771e733e61f5e870417493e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55C41 14332 bytes

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