Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c05f844fd6e4d1…

MALICIOUS

PDF

342.0 KB Created: 2015-08-26 12:01:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 834b13bfca3c921abac3e0731f1ae7b4 SHA-1: 270ea9ccf10e8d293bf2787319394406811a34ca SHA-256: f6c05f844fd6e4d1bc89b839ab132b33167646a953adad07cf5780fd1fc7a8dd
68 Risk Score

Malware Insights

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

The PDF file contains an embedded JavaScript stream and a critical heuristic firing indicates a malicious redirector link. This link, http://botcraftman.ru/..., is likely intended to lead the user to a malicious site. The presence of embedded JavaScript further suggests an attempt to execute malicious code upon opening the document.

Heuristics 3

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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%87%D0%B8%D1%82+%D0%BE%D1%82+%D0%BA%D0%BE%D1%80%D0%BE%D0%BB%D1%8F+%D0%BD%D0%B0+%D0%B2%D0%B0%D1%80%D1%84%D0%B5%D0%B9%D1%81&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752251_klyuch__k__igre_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4753/4753292_the__elder__scrolls_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4754/4754457_tekst__k__pozdravitelnoy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005145f.bin
5733b785506f8b23075e0df27f7e5872da0a9f7331c21b5ccf357967d78c0cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5145F 8008 bytes
font_01_sfnt_off00052b49.bin
19697f56b6aa847798c734640aac43afe0097c243182a316d273ef245161f056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52B49 14876 bytes

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