Malicious PDF — malware analysis report

Static analysis result for SHA-256 91118addb55bd42e…

MALICIOUS

PDF

340.3 KB Created: 2015-08-25 22:31:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 5831edfb9ddc2edea0a2410a2bff63d7 SHA-1: de404075e7a81d05943a455f163c175425652370 SHA-256: 91118addb55bd42e72cd08df983e4ffd8bdf28a7ce8052d1ba7ce0ed3befa5e2
68 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and a critical heuristic firing for a malicious redirector link. The embedded JavaScript and the redirector link at http://botcraftman.ru/ suggest an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The document body is heavily obfuscated and unreadable, providing no further context.

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=%D0%B3%D1%82%D0%B0+5+%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+%D0%BD%D0%B0+%D0%BF%D0%BA+%D1%80%D0%B5%D0%BF%D0%B0%D0%BA+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4741/4741035_putin__i__muzhik_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740779_dogovor__na__zapravku_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740917_skachat__antivirus__doktor_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050d16.bin
76f5effd7d386854414d08346959e87fc550881eab559e931cdf052150521ade		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50D16 7972 bytes
font_01_sfnt_off00052468.bin
aa857f37c9ac463fb42cb78256ff9eba0a79e769f69479b932eb36fadc5e74be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52468 13864 bytes

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