Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde87e36e5484c03…

MALICIOUS

PDF

383.1 KB Created: 2015-08-23 21:02:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d884a65c5a29141b3b733ce8603713e9 SHA-1: 4f85a53065f0fd44da9904e98b46a03a4f9b5c4f SHA-256: dde87e36e5484c034487d18cfc8c80166b2a100efbdc8d50c5abb8eb382882ad
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for containing a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL is the primary indicator of malicious intent, suggesting the document is a lure to a site that likely hosts further malicious content or phishing pages. No scripts were extracted from this sample.

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=%D0%B5%D0%B4%D0%B8%D0%BD%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%B0%D1%8F+%D0%B6%D0%B5%D0%BD%D1%89%D0%B8%D0%BD%D0%B0+%D0%BD%D0%B0+%D1%81%D0%B2%D0%B5%D1%82%D0%B5+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690073_instrukciya__elenberg__ms_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690071_korsaruy__3__veter_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690052_skachat__intro__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b1c2.bin
039d0c3748ca52f4f1ac154f342734908514e9632ec020d75f8c91a58248a87c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1C2 8960 bytes
font_01_sfnt_off0005cab5.bin
0f1676365e3f7fea689354982d30451533e6c84ebb92e3b8ce619a6282ae2f79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAB5 16116 bytes

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