Malicious PDF — malware analysis report

Static analysis result for SHA-256 4676e38055604d54…

MALICIOUS

PDF

364.8 KB Created: 2015-08-25 22:09:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 04485c4fa493bc3653e362bd2e0a8a06 SHA-1: fd9afbfd6e7a766122829889844451604c6cd7b8 SHA-256: 4676e38055604d5435ae8027aa5f242dcda7b05acf3fe91efe75da6e0bb72987
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL is sufficient evidence for a high-confidence assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B0%D0%B2%D1%82%D0%BE%D0%B1%D1%83%D1%81%D0%BE%D0%B2+%D0%B3%D0%BE%D1%80%D1%8F%D1%87%D0%B8%D0%B9+%D0%BA%D0%BB%D1%8E%D1%87+%D0%B3%D0%B5%D0%BB%D0%B5%D0%BD%D0%B4%D0%B6%D0%B8%D0%BA&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740550_skachat__3d__instruktor_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740608_klyuch__k__igre_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005700a.bin
e602ea6b67e7e03a577cd2146831fa8661571fbb58c6a3363bec5f675ea6d341		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5700A 8172 bytes
font_01_sfnt_off000587a7.bin
0e41f3232c18083d1d6fd79080f3c87a7c0fb5ca80dba4a4074952f15d76e8b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x587A7 13660 bytes

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