Malicious PDF — malware analysis report

Static analysis result for SHA-256 84b29122c64397d3…

MALICIOUS

PDF

378.0 KB Created: 2015-08-25 22:15:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 25752661c38fcef3fcc0bcc8b93dc808 SHA-1: 0a5f93132275a0d5dd327d7e7bb2453746a2ab16 SHA-256: 84b29122c64397d3626fa60d61d63c50e0dbfc1ff5ec47dc72db8cf1a897749c
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. ClamAV also detected this file as Pdf.Dropper.Agent-9273345-0. The file's purpose is likely to redirect the user to this malicious URL, which could then serve further malicious content or initiate a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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-9273345-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9273345-0
  • 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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+%D0%B4%D0%BB%D1%8F+%D0%B8%D1%81%D0%BA%D0%B0%D0%B6%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BB%D0%B8%D1%86%D0%B0+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D0%B2%D0%B5%D0%B1+%D0%BA%D0%B0%D0%BC%D0%B5%D1%80%D1%83+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740691_skachat__proshivku__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740727_akt__proverki__yeffektivnosti_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740668_skachat__torrent__vedmak_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059ce7.bin
3914bff71c9edd48403ddc06f5fb2fab7cfd40122edf1ae36724f3d98ff90532		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59CE7 8316 bytes
font_01_sfnt_off0005b553.bin
53442bbba211fe3536c21d3ff772d45b54cdb301dea2bb35ae1404f88972079c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B553 16596 bytes

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