Malicious PDF — malware analysis report

Static analysis result for SHA-256 86b62fb6f74241dc…

MALICIOUS

PDF

298.7 KB Created: 2015-08-29 01:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: cf4f8a0d50efbeb0ac510ef7b0abf9fb SHA-1: a925f3671d9d3bad2948aa883827d71ce01a7939 SHA-256: 86b62fb6f74241dc2b7742f81d6fcd5cf48c8776dd42e128143b5c5bd6a880de
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a critical heuristic firing indicating a redirector link to a known malicious domain. The ML classifier also flagged the PDF as malicious. While no scripts were extracted, the presence of a malicious redirector strongly suggests the document's purpose is to lure the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6955

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=%D0%B7%D0%B2%D1%83%D0%BA%D0%B8+%D0%BE%D0%B1%D0%BE%D1%80%D0%BE%D1%82%D0%BD%D1%8F&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817749_aleks__pandiyan__2015_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818214_skachat__imaginari__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817433_rele__povorotov__4953747_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004645a.bin
b4a0f0dd1584f7d4c64ea8515aef50b98138602689425ff48c7cd87eb2680ee9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4645A 8244 bytes
font_01_sfnt_off00047cb8.bin
fa368d286f3948516f00948682e8de078816b4f04d762521f5b027d7aacbcad1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47CB8 15612 bytes

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