Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0e5f3a247bfcf8…

MALICIOUS

PDF

346.5 KB Created: 2015-08-26 19:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 2dacbad1243658f0713be9b7c86d2608 SHA-1: df264e79e0d2a282b21beef724249c5f93fbf515 SHA-256: 4d0e5f3a247bfcf841f64aa7f2590dcf16196861307f59fb84d3948788b67147
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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%BF%D1%80%D0%B5%D1%81%D0%B5%D1%82%D1%8B+%D0%B4%D0%BB%D1%8F+lightroom+5+%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+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762319_kovriki__iz__poliyetilenovuyh_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762365_digitech__rp55_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763025_skachat__mentovskie__voynuy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000522dc.bin
568e2102de1f2f1ab23c9ef09cfd2fcb3e9dd7e40f3c9ef1b6771d1454e6ae2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x522DC 9452 bytes
font_01_sfnt_off00053ddc.bin
509898c9cac369c891996cddc0fdaaffe35edda5f7d36d723fe7e54f1a4bc53d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53DDC 14376 bytes

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