Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bc9d30eb8465d0c…

MALICIOUS

PDF

366.5 KB Created: 2015-08-26 11:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 43618a327de7279c7c0a65ab71ac4f0e SHA-1: 9ae8b9d202d36e2acfb0b90aa7e5362cd5492174 SHA-256: 6bc9d30eb8465d0cc61f7905164ea79d3d761cc348844de32b8928929b081135
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, indicating a malicious intent to lead the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%BF%D1%80%D0%B0%D0%B2%D0%BE%D1%87%D0%BD%D0%B8%D0%BA+%D0%BA%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4+atmega&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752418_mozhno__li__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751519_irina__krug__i_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752104_vegas__pro__11_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000574bf.bin
5121d314176f7e6cd5de4d34b3bdc8d50fc386682f1eaceaa8f72ad539d0c0f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x574BF 9308 bytes
font_01_sfnt_off00058f74.bin
81fabcc0231c63b81acd54d58a771105253d89b9c3164459405bd4265ee2ba66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F74 14080 bytes

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