Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aceffe59c50b048…

MALICIOUS

PDF

362.2 KB Created: 2015-08-24 04:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9dcacdeb609dc9dc85c4fe1ccea12e29 SHA-1: 4b815dfb4cd1c480abb89c69af29f1bc5743f0be SHA-256: 9aceffe59c50b04834baef326e5800c96d390ab6c88e6a77b6123fdd399f7432
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, botcraftman.ru. This indicates 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 presence of the malicious URL is sufficient evidence for this assessment.

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=mount+and+blade+the+last+days+%D0%BA%D0%BE%D0%B4%D1%8B&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4699/4699229_proshivka__dlya__samsung_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4699/4699712_pesnya__o__tbilisi_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695376_elena__zvezdnaya__kiran_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055f2d.bin
3258fb620898ab1c4dfe6e2af39b90daabde13060edb26823209936dc1a136a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55F2D 9116 bytes
font_01_sfnt_off000577e9.bin
d3351d2550bd819fa1ed2fc8a73ea6269cc0fd80fc841467149a32be94924a86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x577E9 16184 bytes

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