Malicious PDF — malware analysis report

Static analysis result for SHA-256 5191fd1aa01b1bd8…

MALICIOUS

PDF

363.6 KB Created: 2015-08-25 22:09:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e1166a7e576bade68cfddd70a93050ab SHA-1: cf3581fceb14c7e467c197a9fee01f206ac1bc2f SHA-256: 5191fd1aa01b1bd836c0acfdf411cf5def2c5308afe76c9f1d90bbb29ec95b0c
92 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, http://botcraftman.ru/. This indicates the document is designed to lure users to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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%9F%D1%80%D0%BE%D0%BA%D0%B0%D1%87%D0%BA%D0%B0+%D0%B7%D0%BE%D0%BC%D0%B1%D0%B8+%D0%BC%D0%B0%D0%BD%D0%B8%D0%B8+%D0%B2+%D0%BE%D0%B4%D0%BD%D0%BE%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%BD%D0%B8%D0%BA%D0%B0%D1%85&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740617_proektuy__karkasnuyh__domov_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740607_need__for__speed_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056776.bin
8d3d3393d2eac61e3a03c4a33cab2e6ca75179b8e68fa125375da926c16c135a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56776 8156 bytes
font_01_sfnt_off00057f3c.bin
59d3797c532509e228552df6cca517cab92038f118e76d5f23aa2ee28db7dfa1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57F3C 15496 bytes

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