Malicious PDF — malware analysis report

Static analysis result for SHA-256 b28a7a93d12a373b…

MALICIOUS

PDF

353.0 KB Created: 2015-08-25 22:17:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f0d95882e05b0fc1b8c7811e203cda5c SHA-1: ec461acb670cc431f469d904c5775909f24f6b22 SHA-256: b28a7a93d12a373b2ca8fa2c50604731d2988a89992f57c013134dd9fb5cc19b
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/. This indicates the document is likely intended to lure users to a malicious site for phishing or malware delivery. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%B8%D0%B3%D1%80%D0%B0+%D0%BF%D1%80%D0%B5%D1%81%D1%82%D0%BE%D0%BB%D0%BE%D0%B2+%D0%BD%D0%BE%D1%82%D1%8B+%D1%84%D0%BE%D1%80%D1%82%D0%B5%D0%BF%D0%B8%D0%B0%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740675_skachat__tekstur__paki_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740620_prakticheskiy__kurs__kitayskogo_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740682_klyuch__vinduy__7_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053ced.bin
0dc6887fb25c643ed3a8bb9612513597ee2e93e582245ad4b1084458a087cd61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53CED 8488 bytes
font_01_sfnt_off00055412.bin
c3ac86ad613bee7c53b4b2737ec07f22876b8e69626e8fd862621a2461d0d25a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55412 15884 bytes

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