Malicious PDF — malware analysis report

Static analysis result for SHA-256 056aa393a052c8ef…

MALICIOUS

PDF

357.5 KB Created: 2015-08-26 09:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e573da5032e0629108df967457d14476 SHA-1: 397b32ec85fddaa6c01ac4cdeb46ea5849b62c45 SHA-256: 056aa393a052c8efdc7884004f1faf2f8083d5adc4b3766a677535c5480908c6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector, http://botcraftman.ru/, which is designed to trick users into downloading potentially harmful content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%B5%D0%BC%D1%8B+%D0%B4%D0%BB%D1%8F+samsung+gt-s5260+star+2+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751596_programmuy__dlya__zarabotka_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751680_skachat__drayver__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751873_nabor__programm__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005439a.bin
35bf0ed584a4750fd631bc0f870a5a631b605422c87b8fcb0cfd5920566165a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5439A 10864 bytes
font_01_sfnt_off00056188.bin
f395096cebae33d47089b847806595a686a5cf4aad3a7fa0ea6f3e20fd50d9b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56188 17424 bytes

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