Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e3b6cacbb3427c…

MALICIOUS

PDF

352.0 KB Created: 2015-08-28 12:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 7d211b3966385a824d91cf28c1f9124a SHA-1: 025f22a40752b39db2326a76c451d35aab60c30d SHA-256: 66e3b6cacbb3427cb6cebabafe387af2db447785407eb4e50e272958011ece42
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and truncated, preventing a detailed analysis of its specific content or intent beyond the malicious redirection.

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%BF%D0%B5%D0%BB%D1%8C+%D0%BA%D0%BE%D1%80%D1%81%D0%B0+%D0%B4+%D1%80%D0%B5%D0%BC%D0%BE%D0%BD%D1%82+%D1%81%D0%B2%D0%BE%D0%B8%D0%BC%D0%B8+%D1%80%D1%83%D0%BA%D0%B0%D0%BC%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803995_skachat__besplatno__pourochnoe_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802537_animacionnuyy__tema__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803851_stavropol__transtur_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053d84.bin
4714213a9c4e16b10e7c65780291c99180ed29e701a05272176c0be66cae3803		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D84 8824 bytes
font_01_sfnt_off000556eb.bin
2044374c709007db9f58534dc588e49ce4b276eec41ad180b1daf09b68b4d38b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x556EB 13208 bytes

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