Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb0aac9f6b79b0c7…

MALICIOUS

PDF

363.5 KB Created: 2015-08-28 11:38:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d55a5a9e2d8f461c7a9b75f399f34db5 SHA-1: a2e3f54231e70d30cef002923aecb3c1f7a9b6b6 SHA-256: cb0aac9f6b79b0c73cce49b9e812cc5cd6ee4913836c68c697dafdb078719d7a
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary attack vector appears to be luring the user to click the malicious link, which is likely to lead to a phishing page or initiate a malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D0%B7%D0%B0%D0%BF%D0%BE%D0%BB%D0%BD%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BD%D0%BE%D0%B2%D0%BE%D0%B9+%D0%B0%D0%BD%D0%BA%D0%B5%D1%82%D1%8B+%D0%BD%D0%B0+%D0%B7%D0%B0%D0%B3%D1%80%D0%B0%D0%BD%D0%BF%D0%B0%D1%81%D0%BF%D0%BE%D1%80%D1%82+%D1%81%D1%82%D0%B0%D1%80%D0%BE%D0%B3%D0%BE+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D1%86%D0%B0+2013&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802383_goluye__yelfiyki_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802489_acdsee__pro__51_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802417_scenariy__agitbrigaduy__muy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056155.bin
1cace6fcb318ec1a5fef12204a14bf4f66ffc2dced0544109f39926130063a76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56155 9036 bytes
font_01_sfnt_off00057b94.bin
e5497a51647699bdb1feb78ae63b4d5faeac66f1b9d5516027d402c2e3f298db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B94 16924 bytes

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