Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd22fe13425fe787…

MALICIOUS

PDF

372.2 KB Created: 2015-08-26 20:18:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 298d6a5bd953b52afa59c834b04be24f SHA-1: b14bc94d48eacb7c02ea53a819325c789cea766e SHA-256: dd22fe13425fe787dc1799992e9eb86211e0952606fdb79b17b25fe208d239bb
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 infrastructure. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of the malicious URL suggests the document's intent is to lure the user to a compromised site. The document body is heavily obfuscated and unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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%B7%D0%B0%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BD%D0%B0+%D0%B2%D0%BE%D0%B7%D0%B2%D1%80%D0%B0%D1%82+%D0%BD%D0%B0%D0%BB%D0%BE%D0%B3%D0%B0+%D0%BD%D0%B0+%D0%B4%D0%BE%D1%85%D0%BE%D0%B4%D1%8B+%D1%84%D0%B8%D0%B7%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D1%85+%D0%BB%D0%B8%D1%86&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763314_skachat__servak__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762403_sbornik__klipov__2014_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763120_skachat__medieval__2_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005884a.bin
5e4c068b688a69779356f3bb160cb200e4139438c3ce3b6e206496be96827eaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5884A 8648 bytes
font_01_sfnt_off0005a19d.bin
07276ac8360d9f4d51425c18a97eed73c250bc62f1d1f4c18a10e15e83eb812a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A19D 15224 bytes

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