Malicious PDF — malware analysis report

Static analysis result for SHA-256 884a98ac772c3c9b…

MALICIOUS

PDF

367.5 KB Created: 2015-08-28 00:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9a272a7400055c873968dc1f328da37f SHA-1: de3cef5059fe45cbb900962ff843c36fd02544b3 SHA-256: 884a98ac772c3c9b5eee8ee542b22459590a396e65684c3d6a70030f83f657e9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristic firings strongly suggest a phishing or redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

Heuristics 2

  • 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.
  • 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%83%D1%87%D0%B5%D1%82%D0%BD%D0%B0%D1%8F+%D0%BF%D0%BE%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0+%D0%BF%D1%80%D0%B8+%D1%83%D1%81%D0%BD+%D0%BD%D0%B0+2013+%D0%B3%D0%BE%D0%B4+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%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&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788328_dzhodzho__moyes__odin_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788225_kupit__klyuchi__ot_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788378_ranetki__igra__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000576de.bin
2e95b5a2ade82c72a8c847dfc97fe4969d9c7ac9126814b871ad565c3e65d14b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x576DE 8940 bytes
font_01_sfnt_off000590cd.bin
f84e9589a99861ed57c7ff02fe6c4018d5642d80cad0c4615cf68cb10625c2a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x590CD 14572 bytes

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