Malicious PDF — malware analysis report

Static analysis result for SHA-256 724406b971e94430…

MALICIOUS

PDF

358.0 KB Created: 2015-08-28 17:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e0f6abd222087eccd0f6627aafed7273 SHA-1: 03f9e75cf04666722ff8d364f6bc6445bce2a690 SHA-256: 724406b971e94430d50eaed6937d55623e4f978007fc64bc6e33cbf69a17487b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links to known malicious redirector infrastructure, specifically http://botcraftman.ru/. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest it is designed to lure the user to a compromised site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-8150104-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8150104-0
  • 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=%D0%B0%D0%B2%D1%82%D0%BE%D0%B1%D1%83%D1%81+%D0%BC%D0%BE%D1%81%D0%BA%D0%B2%D0%B0+%D0%BA%D0%B0%D0%BC%D1%8B%D1%88%D0%B8%D0%BD+%D1%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809428_skachat__proshivku__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809509_9449449445678__na__dvore_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809304_virtualnoe__pianino__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000551a5.bin
9f5aad1e0a4d4904ee3b01222a6ca6a9e3f1786f5601f5ead44f17fee418607e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x551A5 7852 bytes
font_01_sfnt_off000568a6.bin
2488dd7d78ab589dbbe756adf0c35f88c6e8cdbd35b84c9c25bf706211b20fec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x568A6 15424 bytes

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