Malicious PDF — malware analysis report

Static analysis result for SHA-256 895e0fc431b94c15…

MALICIOUS

PDF

387.0 KB Created: 2015-08-28 18:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d2bfe651fd9b3c5d501ee3a2301bfb67 SHA-1: 0c24f6cfa348b4251d41ad4a10e80db48e0fa8dc SHA-256: 895e0fc431b94c155f978d234975aac3a30b28e3cd5a3d70dac0482f88c3dafe
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, indicating a malicious intent to direct users to harmful content. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a malicious link embedded within the PDF document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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%BE%D1%82%D0%BA%D1%80%D1%8B%D1%82%D1%8B%D0%B5+%D1%83%D1%80%D0%BE%D0%BA%D0%B8+%D0%BF%D0%BE+%D1%87%D1%82%D0%B5%D0%BD%D0%B8%D1%8E+%D0%B2+1+%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%B5+%D0%BF%D0%BE+%D1%84%D0%B3%D0%BE%D1%81+%D0%BF%D0%B5%D1%80%D1%81%D0%BF%D0%B5%D0%BA%D1%82%D0%B8%D0%B2%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809658_raspisanie__avtobusov_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809302_karta__metro__seula_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809689_sam__sebe__mva_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005c877.bin
0a749aa30d8261328a848e52a44782660af2ca13a8cbee5cc0b156840982a4ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C877 8968 bytes
font_01_sfnt_off0005e1bb.bin
5700f6cdb888aa914239e08918449489fa63236b878add7c6682ca0ce46611e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1BB 13560 bytes

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