Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1bc8049a27b41c8…

MALICIOUS

PDF

368.2 KB Created: 2015-08-25 15:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d98e22c98efc419faa3c4849ea7f8e6c SHA-1: 008afbf66e101c1fddc26d9010a6d8ee65cf4beb SHA-256: c1bc8049a27b41c8979f88de6b6a4d3d3317779cc2326ac89003a4eaf0b5cf03
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, http://botcraftman.ru/, which is indicative of 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 strongly suggests the document's intent is to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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%BA%D0%B0%D0%BA+%D0%BF%D0%B5%D1%80%D0%B5%D1%83%D1%81%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%B8%D1%82%D1%8C+windows+7+%D0%BD%D0%B0+%D0%BD%D0%B5%D1%82%D0%B1%D1%83%D0%BA+acer+aspire+one&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731748_skachat__drayvera__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731993_programmnoe__obespechenie__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732118_raspisanie__avtobusov__kaluga_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000574e4.bin
f49db719f4b948625c7683dd0c2b9761f0e26a3e673455514883386ef39e28a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x574E4 9724 bytes
font_01_sfnt_off00058f2c.bin
28efbc0922aafb5645fe74479cdca7f72b1c9c7808b5711c879f193772feba05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F2C 16512 bytes

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