Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d76504c3e2e15c…

MALICIOUS

PDF

359.1 KB Created: 2015-08-28 04:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0db58bcea5338b1e4289609b44dee720 SHA-1: 901571c4972b2eba8a782eb10bb922da229c957d SHA-256: e5d76504c3e2e15c1b35f54560e10f0da2846880ee750900219b3acb20522f79
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a malicious redirector link and a high ML score. ClamAV also detected it as Pdf.Dropper.Agent-9147814-0. The embedded URL points to botcraftman.ru, which is identified as malicious redirector infrastructure. No scripts were extracted, but the presence of a malicious link suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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-9147814-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9147814-0
  • 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%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%BD%D0%BE%D1%83%D1%82%D0%B1%D1%83%D0%BA%D0%BE%D0%B2+lenovo+g570+%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&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788522_skachat__sohraneniya__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4790/4790574_skachat__pak__mashin_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4789/4789303_zvuk__uragana__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054fef.bin
cf832fcd0a343cd6d15a1d3a7e2462a9ac0147161fcf7ae9be58577b550d9304		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54FEF 10028 bytes
font_01_sfnt_off00056b05.bin
f10a60b3c528709d7b0dd1b728166d05d1cddda03c10717716bbfb0621832515		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B05 16152 bytes

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