Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b18130612444ddc…

MALICIOUS

PDF

360.8 KB Created: 2015-08-26 09:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 036ac041f3d56706df6ffa8d7e1e9e43 SHA-1: 2d66638ff8643e3296596ddd90f4a32ab0027ecc SHA-256: 0b18130612444ddcc0d299c721c723111b9f4fb74166f1e17c2b2583ac817d72
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/?lip&keyword=%D0%BA%D0%BB%D1%8E%D1%87+%D0%BA+%D0%B8%D0%B3%D1%80%D0%B5+%D1%84%D0%B5%D1%80%D0%BC%D0%B5%D1%80%D1%8B+2&charset=utf-8, is the primary indicator of malicious intent. While no scripts were extracted, the presence of a malicious redirector suggests the document is part of a phishing or malware distribution chain.

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%D1%8E%D1%87+%D0%BA+%D0%B8%D0%B3%D1%80%D0%B5+%D1%84%D0%B5%D1%80%D0%BC%D0%B5%D1%80%D1%8B+2&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751759_avtodata__338__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752186_sbornik__rolikov__devki_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751685_poser__pro__2014_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055dca.bin
42c5680bbbb1d0461366e7d6cb62c3521dbc257834fa492051282a2f467f1886		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55DCA 8164 bytes
font_01_sfnt_off0005755b.bin
4503590fa2d501cf06ed05547f401dd57fda8195abdaae74bbaab3bbc14b1825		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5755B 15024 bytes

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