Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaec68b3a07ee7b1…

MALICIOUS

PDF

367.9 KB Created: 2015-08-28 11:28:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 3419d27afea1ffdefc0d51b4aa123136 SHA-1: 30fa95d842ca10c07298a690574f6314edce06ac SHA-256: aaec68b3a07ee7b1da6478db2c30a3fc73e8c7d99b41dcdc933a61c331a823d6
90 Risk Score

Malware Insights

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

The PDF file contains an embedded link to a known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The primary attack vector appears to be luring the user to the malicious URL, which is likely intended to deliver a secondary payload or phish for credentials.

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=%D0%B0%D0%BD%D0%BA%D0%B5%D1%82%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%BA%D0%BB%D0%B8%D0%B5%D0%BD%D1%82%D0%B0+%D1%81%D0%B0%D0%BB%D0%BE%D0%BD%D0%B0+%D0%BA%D1%80%D0%B0%D1%81%D0%BE%D1%82%D1%8B&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4792/4792882_gothic__2__dark_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4794/4794903_skachat__programmu__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4794/4794061_yekzamen__po__angliyskomu_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057baa.bin
d7bc046e4777bbd4799aac046b4914bc39476dcdfdde8274dddea9c25093b219		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57BAA 7252 bytes
font_01_sfnt_off000590c9.bin
7f03a44d2fbf67682a6b9d297be676c1236f317c1474d250f493a394653e6697		 pdf-font-stream PDF embedded font (sfnt) at offset 0x590C9 15216 bytes

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