Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3d5741516bd72e4…

MALICIOUS

PDF

369.2 KB Created: 2015-08-29 01:29:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 1c35476389015beca3d5e7627f25ca6c SHA-1: d522e3ed0c35e993135a1f1d5a75fedf7b7e70e5 SHA-256: b3d5741516bd72e4685e856915cbc735ba4765750ad194faf3664ff33f17c764
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. This indicates the document is likely part of a phishing or malware distribution campaign. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B0%D0%B2%D1%82%D0%BE%D0%B1%D1%83%D1%81%D0%BE%D0%B2+%D0%BC%D0%BE%D1%81%D0%BA%D0%B2%D0%B0+%D1%80%D0%B8%D0%B3%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818088_kazaki__posledniy__dovod_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817660_egye__po__russkomu_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817761_gta__4__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057f60.bin
ce6fa3ab863765b06bc3a77e106cfe8fcae122fdb1f11aa2d0c2b347d9b5fadc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57F60 7580 bytes
font_01_sfnt_off0005952d.bin
eb8da70b3a927449073316eb2c277549886aa3290872bd7855faebef1e989783		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5952D 15416 bytes

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