Malicious PDF — malware analysis report

Static analysis result for SHA-256 3512b030b8654841…

MALICIOUS

PDF

358.9 KB Created: 2015-08-29 04:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d022a8c5f0e1a81588f1f4119d91e79b SHA-1: 5b5d6946a26337a8fa847bd6eb6fa8de000ba0f4 SHA-256: 3512b030b86548418ee53877d00f4883b9297ca790de60656cddcd9fc3582dc1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the primary malicious functionality appears to be the embedded URL.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+144+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4822/4822184_koduy__na__generaluy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4821/4821498_skachat__terraria_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818289_skachat__kartinki__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005561d.bin
f55061d99150beea52d2a4613f6ffc25a05ac0c1f16d66a7a8a352f796347f78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5561D 8184 bytes
font_01_sfnt_off00056dc7.bin
63bae1f5dfad914287229f3f5012564582ae6863972b49f09fcbae48383b0e5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56DC7 14832 bytes

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