Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fad15c2b71ce96e…

MALICIOUS

PDF

306.3 KB Created: 2015-08-28 16:38:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0879d3a6dc232440947ee22053d7e30f SHA-1: 8e35352ad9bf54777eafcb7d44e940330e82fea9 SHA-256: 8fad15c2b71ce96e2cdad35c18e0e1014d24264b8ddf1e26bf5eaad6470d0e52
90 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, indicating an attempt to lure users to a harmful site. The ML classifier also flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is a strong indicator of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7490

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%84%D0%B8%D0%B7%D0%BA%D1%83%D0%BB%D1%8C%D1%82%D0%BC%D0%B8%D0%BD%D1%83%D1%82%D0%BA%D0%B8&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4805/4805268_lenovo_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803018_skachat__visio__2007_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802401_gta__mta_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00047d18.bin
7eebb730354fb4a376f62ac2c709a9d85c128072b3625ad102860029ffe1eef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47D18 8332 bytes
font_01_sfnt_off00049583.bin
640b385c849d258e3a5f794c55732e2a37b60d7068d0c5b0a9f672b8d0cae1c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49583 17220 bytes

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