Malicious PDF — malware analysis report

Static analysis result for SHA-256 c942f59edde44e82…

MALICIOUS

PDF

350.9 KB Created: 2015-08-28 18:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a3b79baf44b3838edaa4eb6626412e64 SHA-1: afd39a504d1e7992482b993459eb912011a00030 SHA-256: c942f59edde44e820cf79dde69b8207953730b563ce2949c2ef64b523f4f8752
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The presence of this link suggests the document is designed to lure users to a malicious website, likely for phishing or malware distribution. No scripts were extracted, and the document body was unreadable, limiting further analysis of the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D0%B4%D0%BE%D0%B3%D0%BE%D0%B2%D0%BE%D1%80%D0%B0+%D0%BD%D0%B0+%D1%80%D0%B0%D0%B7%D0%BC%D0%B5%D1%89%D0%B5%D0%BD%D0%B8%D0%B5+%D1%80%D0%B5%D0%BA%D0%BB%D0%B0%D0%BC%D1%8B&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809112_programmuy__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809339_dis57new__vmware__obraz_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809684_igra__android__nyam_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005351c.bin
63242a82f1ea50d784d371f2430fcd336ea942734b45377455c1b71f0ddd1f62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5351C 8016 bytes
font_01_sfnt_off00054caf.bin
37c1e009ce9a29b7a3fcafa06cb40f922bdfb2882025cbef6de6b56cd1ae0c6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54CAF 15188 bytes

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