Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c5a1a2352067f76…

MALICIOUS

PDF

356.5 KB Created: 2015-08-26 19:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c4bc2765f5579d01fff971c2abb06d4f SHA-1: e91a461f7155a93fb4877c63992048cc9ab62085 SHA-256: 5c5a1a2352067f767a7d4a395c3f9be5ca75abcdcb190ef37b5cec85cb8bf843
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest malicious intent. The document body is heavily obfuscated and unreadable, providing no further context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8226

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%B8%D0%B3%D1%80%D0%B0+%D0%B3%D0%B4%D0%B5+%D0%BD%D0%B0%D0%B4%D0%BE+%D0%B1%D0%B5%D0%B3%D0%B0%D1%82%D1%8C+%D0%BF%D0%BE+%D0%BF%D0%BE%D0%B5%D0%B7%D0%B4%D0%B0%D0%BC+%D0%B8+%D1%81%D0%BE%D0%B1%D0%B8%D1%80%D0%B0%D1%82%D1%8C+%D0%BC%D0%BE%D0%BD%D0%B5%D1%82%D0%BA%D0%B8+%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+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762566_skachat__stalker__zone_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762463_siniy__yekran__smerti_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763187_skachat__viber__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054c36.bin
fcff5d4e016465cd05dce0dc763aefd5ea87cf7561ded27a8e7479556e9eb5e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54C36 7452 bytes
font_01_sfnt_off000561e7.bin
e45eba168e99cc3a3e52becd0ae10f5f4bc7560dcc5cdf069771e8fdba38d9bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x561E7 15176 bytes

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