Malicious PDF — malware analysis report

Static analysis result for SHA-256 90ab3a5966f4ddfa…

MALICIOUS

PDF

363.8 KB Created: 2015-08-28 01:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: add8d6bfc672574cff6a87f201d46a63 SHA-1: 5f075cb5ca09a2673bdb62034fc5014fc56af033 SHA-256: 90ab3a5966f4ddfaa36ffd6d9b70422329fd6d17b1bdc6a36f49a5a40e16038a
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%D0%B7%D1%80%D0%B5%D1%88%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BD%D0%B0+%D0%B2%D0%B2%D0%BE%D0%B4+%D0%BE%D0%B1%D1%8A%D0%B5%D0%BA%D1%82%D0%B0+%D0%B2+%D1%8D%D0%BA%D1%81%D0%BF%D0%BB%D1%83%D0%B0%D1%82%D0%B0%D1%86%D0%B8%D1%8E+%D0%B1%D0%BB%D0%B0%D0%BD%D0%BA&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788392_skachat__shemu__nokia_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4789/4789395_goluye__bolshie_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787979_2015_____.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000568c4.bin
14e471304865efdda4f2b83296204661e8fc1f9c2f20735014428ed3062ce99d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x568C4 8292 bytes
font_01_sfnt_off00058110.bin
caccac4200dbcffd6b9d8b5e4c392a76de278421895c8e7f0308b91d363df25a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58110 15100 bytes

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