Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef205fe662eb744…

MALICIOUS

PDF

359.8 KB Created: 2015-08-29 00:57:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 5504eea2ee93095b3c12bf1ac5d62410 SHA-1: 5a47613422428b8b10b1904ce68a4d58e4ee865a SHA-256: 0ef205fe662eb74427c68f09a0509b8c8bac9456bae4a1bf3bf37f6bc5c5f787
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of a malicious URL is a strong indicator of malicious intent.

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=%D0%BA%D0%BB%D0%B8%D0%BF%D1%8B+%D0%BC%D0%B0%D0%B9%D0%BA%D0%BB%D0%B0+%D0%B4%D0%B6%D0%B5%D0%BA%D1%81%D0%BE%D0%BD%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817551_lyubye__soldat__tekst_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817554_artefakt__detektiv__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817503_programmuy__dlya__obscheobrazovatelnuyh_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055b0d.bin
4f97ff0928599c6d0ffb48df893800b3b353796c827b4d3166008a1fe72a4bec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55B0D 7860 bytes
font_01_sfnt_off0005715c.bin
2fbe250fe0417c203af5285b3bc03651a365efef305b962b117134dc332b7fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5715C 14568 bytes

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