Malicious PDF — malware analysis report

Static analysis result for SHA-256 9afa9e731a09706f…

MALICIOUS

PDF

363.5 KB Created: 2015-08-24 00:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 17f3983e9cd43d28d586452ddaf14c74 SHA-1: 4d9221e7ed6bad0045b7f4823b81272a6f91a39c SHA-256: 9afa9e731a09706f8420b6ab4d491df1beb55d0c62e71519ce3263a1c5440fa8
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the lure.

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=%D0%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+spb+tv+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD+%D0%BD%D0%BE%D0%BA%D0%B8%D0%B0+5230&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693412_normuy__rashoda__topliva_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693036_skachat__windows__xp_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693273_kartuy__dlya__navitel_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056226.bin
97a29c11c17cc6d904b5ec91e07b957495fe6b878421389e75efcb0e7fc11e23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56226 9248 bytes
font_01_sfnt_off00057d27.bin
e553aa83a3b91001e49f3724987aa39c79298686773cc7036bef99fab1407fb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D27 16184 bytes

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