Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e373b9ff08861d…

MALICIOUS

PDF

367.8 KB Created: 2015-08-28 18:50:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 23b0639417c1351bc1b129a25039ec44 SHA-1: 56eef9300d2dfc776f477d4a72e82e44b82b8d54 SHA-256: f3e373b9ff08861d8f1ff004c7b690eee84bec601fcc83a6272dfef94eebdb6c
92 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The embedded URL is disguised with keywords related to software, suggesting a phishing or scam lure. The ML classifier also strongly flagged this PDF as malicious.

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=Wavepad+sound+editor+key&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809890_itogovaya__kontrolnaya__po_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810071_skachat__igru__veselaya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810411_cold__war__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000575e6.bin
87e5fc0c191ec2fee096a3850d85a458a73dcfe90126ef767125eec767bd76e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x575E6 8936 bytes
font_01_sfnt_off00058e55.bin
00f81983f363bf6bbb565d35fca541be560cb71830a664b4f4abe5a1a2b35e3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E55 16480 bytes

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