Malicious PDF — malware analysis report

Static analysis result for SHA-256 adcedf4e0b6b3975…

MALICIOUS

PDF

362.5 KB Created: 2015-08-25 15:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 8ccd84b81d1b5d5bb56c3cc63d83915b SHA-1: 4643860f71ebc9ce33c2eef57dbfb1ade13f3e56 SHA-256: adcedf4e0b6b39753bfd2ee8ce59bf2d80e31ac0fa2a0395b78646ec80d6adc1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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. While no scripts were explicitly extracted, the presence of a malicious URL strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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%81%D0%BE%D1%86%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B5+%D0%B8%D1%81%D1%81%D0%BB%D0%B5%D0%B4%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D1%80%D1%8B&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731826_zhurnal__potencial_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731317_maternuye__scenki__skazki_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731849_bob__marley__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005620a.bin
618d25b844c198959d483d8bda3c760b263461d66b28e33afc43f075f21f3f49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5620A 8000 bytes
font_01_sfnt_off00057922.bin
da3a0a730ff665337764df6c3ac76d50accc0309f32b97fda53c341707ef7d10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57922 16704 bytes

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