Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c801f9764c739f0…

MALICIOUS

PDF

367.9 KB Created: 2015-08-25 09:20:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 742a45f5b533c6b37673c52f08b78f69 SHA-1: 3897d90fe2e28c8854604e94cab797768714c623 SHA-256: 7c801f9764c739f046551882e2abee8cc9ef6c1920e21e4ad411aa3daf5ff413
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The presence of this link suggests the document is designed to lure users to a malicious site, likely for phishing or to download further malware. No scripts were extracted, but the malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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%BE%D0%B3%D0%BD%D0%B5%D0%B2%D1%83%D1%88%D0%BA%D0%B0-%D0%BF%D0%BE%D1%81%D0%BA%D0%B0%D0%BA%D1%83%D1%88%D0%BA%D0%B0+%D0%BA%D1%80%D0%B0%D1%82%D0%BA%D0%BE%D0%B5+%D1%81%D0%BE%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725367_iap__cracker__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725380_skayp__dlya__kompyutera_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725660_skachat__narezki__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057a7a.bin
0c03a1f9963df023de4db8df56b5fb2f0e14f3d071f19654e61ba902aa8e026c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57A7A 8384 bytes
font_01_sfnt_off0005932d.bin
2e62658baa816a48a4d21c3b00f04f2a0e6c493f1dfd7a25d2ff31a953ef4e47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5932D 14880 bytes

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