Malicious PDF — malware analysis report

Static analysis result for SHA-256 129b3af8aefff12f…

MALICIOUS

PDF

354.7 KB Created: 2015-08-28 11:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 58fed19c835f5406d1701120a0a66c83 SHA-1: 46ac266e1195d560d5ad492343db00827d1fd62f SHA-256: 129b3af8aefff12f0deab4acbdc322197220c355198e183af55813fca1d05af4
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL points to botcraftman.ru, which is flagged as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and the malicious link suggest an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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%BE%D1%84%D0%BE%D1%80%D0%BC%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BA%D1%83%D1%80%D1%81%D0%BE%D0%B2%D0%BE%D0%B9+%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D1%8B+%D0%BF%D0%BE+%D0%B3%D0%BE%D1%81%D1%82%D1%83+2010+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D1%80&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802628_skachat__albom__artura_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802366_otrava__kruysinaya__smert_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802517_skachat__pesni__tbili_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000544e3.bin
8eae9e12bad3bea747a21075b67523352db57b0983146e70805b2f118b0e1125		 pdf-font-stream PDF embedded font (sfnt) at offset 0x544E3 9984 bytes
font_01_sfnt_off00056125.bin
4cbb4d35558868644dfb45c535df8604cf23c63de4b6d642c5b31efdab78b35b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56125 13012 bytes

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