Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c34e1244769aeb…

MALICIOUS

PDF

367.9 KB Created: 2015-08-26 10:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0fc4e3f688b6393471daadd36afa54f6 SHA-1: 4a8d233d4375722245038e4d7afb0337b92b5b18 SHA-256: 19c34e1244769aeb944713f4ac8d71e7a40bd3fbacec262602e4fba82b673da3
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, botcraftman.ru, which is disguised as a download for 'Surgeon simulator 2013 meet the medic'. This indicates a social engineering attempt to trick the user into visiting a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

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=surgeon+simulator+2013+meet+the+medic+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752244_kod__aktivacii__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751729_powerpoint__2010__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752179_programma__provedeniya__pervichnogo_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057032.bin
fe9961092685c2a2708276ab394728bd28d0383f1db44dc12e901d3b089892e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57032 9960 bytes
font_01_sfnt_off00058bb9.bin
af99e9633a0443bbc3e8c042d8d72a06b1598812eee1b96a8482b9b30b3e3ee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58BB9 17184 bytes

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