Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bb878ee043bfeee…

MALICIOUS

PDF

352.8 KB Created: 2015-08-23 20:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 70b568b9edf766df60ca8c8c3e068cbe SHA-1: 8b4bcfb7434e0ce761d979fe0787c5892ed7ebd2 SHA-256: 6bb878ee043bfeee1b808929701f207048b58124b44a339a5cf7e3ac38fb74b9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains an embedded URL pointing to a known malicious redirector, indicating an attempt to lure the user to a harmful site. While no scripts were explicitly extracted, the presence of a malicious URL in a PDF strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-9228114-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9228114-0
  • 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%81%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%BD%D0%B0%D1%81%D1%82%D1%80%D0%BE%D0%B9%D0%BA%D0%B8+%D0%B7%D0%B2%D1%83%D0%BA%D0%B0+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690034_dnevnik__motuylka__reychel_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690052_skachat__intro__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690058_skachat__mod__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053f6a.bin
f1a861c4ddcaddc7504d4f0d920e649a416d61ad631b793297496c03ff51df0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53F6A 9640 bytes
font_01_sfnt_off00055ab3.bin
886f4e2345ef9385098c7503fbbb4e2bd47ec40efe8d9dfa0540fcfdc2d5a785		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55AB3 12996 bytes

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