Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a84ae2ade7dddf…

MALICIOUS

PDF

361.0 KB Created: 2015-08-24 00:14:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 280d5f39c217d8501626adc86221c752 SHA-1: d5716c2b29583fafb847ba91c0cf10dba6671a0b SHA-256: 82a84ae2ade7dddf2f9efa7aa461aa5c8051fa376af0401f1b09398a5893d84a
92 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The presence of this link suggests the document is designed to lure users to a malicious website. No scripts were extracted from this sample, limiting further analysis of its specific payload delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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%D0%BD%D0%B5%D1%82+%D0%BA%D0%BB%D1%8E%D0%BD%D0%B5%D1%82+%D0%BE%D0%B1%D1%8F%D0%B7%D0%B0%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%BE+%D0%B7%D0%BD%D0%B0%D0%B9+%D1%81%D0%B5%D0%B1%D0%B5+%D0%B3%D0%BB%D1%8F%D0%B4%D0%B8+%D0%B2%D0%BD%D0%B8%D0%BC%D0%B0%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693959_rechevoy__portret_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693664_antivirus__kasperskogo__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693508_scenariy__provedeniya__yubileya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055f7c.bin
67e7dc20fffec5422a02aaa2b32d5a1d7280438b60375c4c1effce665976ce1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55F7C 8444 bytes
font_01_sfnt_off000577bb.bin
59da9f7410ada3c04334a623cad73a5f312d51054b8485b8dab706f70fa5072c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x577BB 13932 bytes

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