Malicious PDF — malware analysis report

Static analysis result for SHA-256 230c45439adb8410…

MALICIOUS

PDF

366.6 KB Created: 2015-08-28 18:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 38a0f3019444201aba75984b08efc19c SHA-1: d63f4bbadb219a9bd8d90555aba0efdb74e52fc3 SHA-256: 230c45439adb8410c4dff8a4ea492e0a66dba6a19b3286177cf01732c0e2c29c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The document body is heavily obfuscated and appears to be non-readable content, suggesting it's not intended for user interaction beyond clicking the malicious link. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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=%D1%81%D0%B5%D1%80%D0%B3%D0%B5%D0%B9+%D1%82%D0%B0%D1%80%D0%BC%D0%B0%D1%88%D0%B5%D0%B2+%D0%B0%D1%80%D0%B5%D0%B0%D0%BB+6+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+fb2&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809512_trehstoronniy__dogovor_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809542_gde__menyat__tokenuy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809110_zayavlenie__na__remont_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000574da.bin
0284b8ccd28f50c08c8d4d824e7b014ee325d1825a1788dd8d1781c5d93b868a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x574DA 8020 bytes
font_01_sfnt_off00058c5e.bin
f6d1d66bdb751eb1dde640353ea0ba045dacaf9de78a254c66d5c4aa3a706ebf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58C5E 14532 bytes

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