Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef40467e7f51eb5…

MALICIOUS

PDF

357.8 KB Created: 2015-08-25 12:33:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ebb463eb466b9c70b93f96ca925a6264 SHA-1: 9b3db8e30e5d6a3f9be2a0c620a54bbab5c513f2 SHA-256: cef40467e7f51eb5d353c88b78c45e729fc841e58a46c4e60a47247458528fd1
92 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is http://botcraftman.ru/. The document body is heavily obfuscated and does not provide clear textual lures, but the presence of the malicious URL strongly suggests a phishing or malware distribution attempt. No scripts were extracted from this sample.

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%BD%D1%8F%D0%B7%D1%8C+%D0%B2%D1%81%D0%B5+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC%D1%8B+%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&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4729/4729648_skachat__biblioteki__kompas_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4727/4727744_gopro__studio__20_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4727/4727666_skachat__besplatno__microsoft_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054c7a.bin
7fcedd3ac946862d26fd254841c1cd885eb920dc6abf3c8a9084ac6ae0d20e32
pdf-font-stream PDF embedded font (sfnt) at offset 0x54C7A 8564 bytes
font_01_sfnt_off0005658a.bin
6a65b7d07f655a73a5617e6f9b01d9d0dbdb5ea400c8caa8763fc88ef76fe3ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x5658A 16156 bytes