Malicious PDF — malware analysis report

Static analysis result for SHA-256 2891347bb98b2faf…

MALICIOUS

PDF

385.1 KB Created: 2015-08-26 10:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 07bb832a1f21e2d59a05ced6621a5d9e SHA-1: 4c36b9aa7d3e6f784349b6ea9a83de4f3587b1dc SHA-256: 2891347bb98b2faf8591e30e6aa8899fee0f4b944a08fecd947be48ae16788f8
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL is likely used to direct users to a malicious website for phishing or malware delivery. No scripts were extracted, and the document body was unreadable, limiting further analysis.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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%B6%D0%B5%D0%BB%D0%B5%D0%B7%D0%BD%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B6%D0%BD%D1%8B%D0%B9+%D1%80%D0%BE%D0%BC%D0%B0%D0%BD%D1%81+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751896_amerikanskaya__istoriya__uzhasov_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752342_1s__buhgalteriya__82_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751595_prezentacii__po__analiticheskoy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005bae3.bin
4777b595b87807950f8c2935467d63dafc52b3dfaf883e470b285d92d6d45d43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAE3 10744 bytes
font_01_sfnt_off0005d7eb.bin
b1891d0f224ac1c1df4a27fee2bc246a86bd59546dddcbfefbbd9b1d71c093c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7EB 14148 bytes

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