Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44719568900cd89…

MALICIOUS

PDF

354.1 KB Created: 2015-08-27 23:53:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9a262237608e5b3dfebc0f22a3643293 SHA-1: 2eea050cbe011b2416e9d442510cae3efed59b5b SHA-256: f44719568900cd8967f8f5e9747e64649abbf56b7f5fb54c2b8089298ced7dd1
150 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-9147885-0. The file's purpose is likely to redirect the user to a malicious site to initiate a download or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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-9147885-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9147885-0
  • 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=%D1%84%D0%BE%D1%82%D0%BE%D1%88%D0%BE%D0%BF+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787947_knigi__dlya__aypad_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788031_skachat__realnuye__pacanuy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788188_gta__5__igrat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054435.bin
8d1e9d5745bd027644735d106ae0ed69d05feecfdbfd4144270180b56700da17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54435 8892 bytes
font_01_sfnt_off00055de5.bin
a5d8aade36f5d8498941860eb6c887806b2a8a706204978b38e88b7ce3188c1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55DE5 13324 bytes

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