Malicious PDF — malware analysis report

Static analysis result for SHA-256 a38063a4326a55b5…

MALICIOUS

PDF

389.7 KB Created: 2015-08-29 11:25:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-23
MD5: d25f6bde8ff921573ec30dcc599d2240 SHA-1: 447caf7b4050e6eea21ac337456c499ecf513b6f SHA-256: a38063a4326a55b582933e88cdf75241a8cd992d30083673d3f2f7d7ec064ca1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of a malicious link suggests an attempt to lure the user to a site that likely hosts further malicious content or phishing forms. The document body appears to be corrupted or heavily obfuscated, preventing a clear understanding of its content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9910

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+trainz+simulator+2012+%D1%81+%D1%83%D1%81%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%BB%D0%B5%D0%BD%D0%BD%D1%8B%D0%BC%D0%B8+%D0%B4%D0%BE%D0%BF%D0%BE%D0%BB%D0%BD%D0%B5%D0%BD%D0%B8%D1%8F%D0%BC%D0%B8+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830221_akademiya__proklyatiy__5_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830323_unturned_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830409_violetta__2__sezon_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005c872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C872 10100 bytes
SHA-256: e53f7220d7c02f83c82e11bd3976eecbbcfa460d70744c87558abc0dfb70b46d
font_01_sfnt_off0005e495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E495 16388 bytes
SHA-256: 5a1651fc8301617a16a8ebf1aa9229a8b85fe4b7bd445fc0ed35900d357c3bf7

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