Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a48b099523748c…

MALICIOUS

PDF

286.5 KB Created: 2015-08-28 01:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9eb75b3b379ad3d6477a2910d1cbf259 SHA-1: a2177cc04f75c4ecb1a1a750bba1ee006aa892a8 SHA-256: a9a48b099523748ca8149b11e648fc92285b91aa9d1352bf2ca2f00b66b5a866
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also indicated a high probability of maliciousness. The embedded URL http://botcraftman.ru/?lip&keyword=%D1%81%D0%B5%D0%B9%D1%81%D0%BC%D0%BE%D1%80%D0%B0%D0%B7%D0%B2%D0%B5%D0%B4%D0%BA%D0%B0+%D1%83%D1%87%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA&charset=utf-8 is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6743

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%D0%B9%D1%81%D0%BC%D0%BE%D1%80%D0%B0%D0%B7%D0%B2%D0%B5%D0%B4%D0%BA%D0%B0+%D1%83%D1%87%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788738_doncova__audioknigi__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4790/4790395_trudovoy__dogovor__s_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4790/4790557_zayavlenie__na__vuyhod_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000432c3.bin
74014655479e2c6536ab4989c4da6ac91f84e1e2cd182bd67d99be1ac3cda9ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x432C3 8216 bytes
font_01_sfnt_off00044a9d.bin
64d0f7c58ef57d650fdf70fa557ff4f48b9058f79b81a354c4bf6f22826dac8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44A9D 15704 bytes

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