Malicious PDF — malware analysis report

Static analysis result for SHA-256 3340a20268e8906b…

MALICIOUS

PDF

352.8 KB Created: 2015-08-29 01:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 365a86351f6a528baf19802c78551992 SHA-1: 74f43029c4ac042f540ddfa8b57909615fad1306 SHA-256: 3340a20268e8906be0082f203b9f5d6bf604997ae965323de8dab770629e19a2
150 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier also flagged the PDF with high confidence, and ClamAV identified it as a known dropper. No scripts were extracted, but the presence of a malicious URL is sufficient to infer a download or phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9894

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8984450-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8984450-0
  • 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+%D0%B7%D0%B2%D1%83%D0%BA+%D0%B4%D0%BE%D0%BC%D0%BE%D1%84%D0%BE%D0%BD%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818155_skachat__knigu__krasnaya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817910_sochi__anapa__raspisanie_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817560_skachat__torrent__monstruy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053ecf.bin
ea7064992c4ca65f7086b25878b2c9041c27ad2bb39681e6e4ff660646cdcdd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53ECF 9804 bytes
font_01_sfnt_off00055a9e.bin
e14b70feebd34a0c5e5cf9fae86c88c59d76552c3822f75f421d5181fb33eb02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55A9E 12740 bytes

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