Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad3933c89e5d6a95…

MALICIOUS

PDF

341.2 KB Created: 2015-08-24 00:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-02
MD5: 1dff190f6bc5bb9da12e23acc823bd12 SHA-1: 2956f48c34f75c406093d5fd38eec1e91c8ffd10 SHA-256: ad3933c89e5d6a954b7e43c04e875af1836e495fd6d72311ac5b0afa092920a3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is indicative of a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL within the document body suggests an attempt to lure the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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=visio+2003+%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 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693034_skachat__igru__hill_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693925_8__pervuyh__razvodov_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693980_klyuch__aktivacii__movavi_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50B2E 9060 bytes
SHA-256: 3347b02dfea94cad5eb31d4b061fcc26ed4f0fa73c93d28f708f90f021c4018a
font_01_sfnt_off0005254c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5254C 16032 bytes
SHA-256: beb61a43dcf42190db78b31b9047e0580aed2fcecfe91ff8ad45fbe5f7479141

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