Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0856711aa64b5c…

MALICIOUS

PDF

378.8 KB Created: 2015-08-26 09:58:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d3f81774dea7f63f4b1dc83070dd7dc6 SHA-1: 2b0ec4aec1619cd889c9033d072f3e04f2c569f6 SHA-256: de0856711aa64b5c315bde0b1daf90a90995d3e7a787be64e54b518b635fb01e
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a direct link to a known malicious redirector. The embedded URL is the primary indicator of malicious intent, suggesting the document is designed to lure users to a harmful website. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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%82%D0%B5%D0%B3%D0%B8+%D0%B4%D0%BB%D1%8F+%D1%81%D0%BA%D1%80%D0%B0%D0%BF%D0%B1%D1%83%D0%BA%D0%B8%D0%BD%D0%B3%D0%B0+%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&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751973_moy__kot__tom_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751503_redneck__rampage__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751729_powerpoint__2010__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a13b.bin
ba6e5db5f021816adb484731cf81b0aee755a3a25aaf1e67a578d19e77c2465b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A13B 7624 bytes
font_01_sfnt_off0005b775.bin
541383983d48a335625f9d1848c50362f8059af24c0426a489556870d3a76c0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B775 17560 bytes

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