Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c24e5a7c23ba06…

MALICIOUS

PDF

360.7 KB Created: 2015-08-22 08:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9429dcaf5d4d852a918766d75ec9641e SHA-1: 0d21d4179cf86486c604bd7f890f3778dcf8d5b4 SHA-256: 89c24e5a7c23ba06179fd55c580528fc61138a206ffb8685eba7a0507829ebdb
122 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'http://botcraftman.ru/'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. ClamAV also detected the file as 'Pdf.Dropper.Agent-8935444-0', further confirming its malicious nature. The embedded URL is the highest priority IOC.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4258

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.
  • ClamAV: Pdf.Dropper.Agent-8935444-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8935444-0
  • 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%A2%D0%B0%D1%82%D1%83%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8+%D0%B2+%D0%B7%D0%BE%D0%BD%D0%B5+%D0%B1%D0%B8%D0%BA%D0%B8%D0%BD%D0%B8+%D1%84%D0%BE%D1%82%D0%BE&charset=utf-8

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000558cb.bin
d7bbd1fefa4dfc67037a33bbebb98129f0f4615efc6be0bb083642e83d4184e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x558CB 10116 bytes
font_01_sfnt_off00057584.bin
f9e9b2547da8632e60354520c076b98802dc67a0e15cfd4e9cfe29d46c03b26c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57584 14564 bytes

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