Malicious PDF — malware analysis report

Static analysis result for SHA-256 576b440a84725b1a…

MALICIOUS

PDF

374.9 KB Created: 2015-08-24 00:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: acc7d47d17d23c971e1ebbc6b5e0e2b7 SHA-1: a9a2fe3836564675307085941522fb05e342b756 SHA-256: 576b440a84725b1a8c115dfe9e51a1df149d647833d31fc3cf93417ab043be58
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of a malicious URL suggests the document is designed to lure the user to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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%9E%D1%84%D0%BE%D1%80%D0%BC%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5+%D0%B1%D1%80%D0%B0%D0%BA%D0%B5%D1%80%D0%B0%D0%B6%D0%BD%D0%BE%D0%B3%D0%BE+%D0%B6%D1%83%D1%80%D0%BD%D0%B0%D0%BB%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693847_kak__obnovit__htc_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693025_unibeast__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693300_windows__7__ultimate_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000595a3.bin
a85fcabd0ef3f8ef07255305de0cf7a1c0d34e5aadec3ee91366af1c5c5231bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x595A3 8428 bytes
font_01_sfnt_off0005aea2.bin
f780b8711d9bb007936804a848339d9e96793952d7d95c46d3430f96a0a682a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AEA2 14908 bytes

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