Malicious PDF — malware analysis report

Static analysis result for SHA-256 685603ff4942de4d…

MALICIOUS

PDF

359.4 KB Created: 2015-08-26 19:30:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 50e4fa47ad3c71e6c677ac6f81bdbc2b SHA-1: ac5127a6611725548a8f4f8d8a31bad07376dbc8 SHA-256: 685603ff4942de4d834f942a9b8f515d5c641fa7c8b92ab28797c6d02c3ebdb0
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 the PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the malicious redirector strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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+butcher+mod+%D0%B4%D0%BB%D1%8F+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+152&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763008_sony__vegas__12_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762927_skachat__audioknigu__pryamuym_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763152_byekgraunder_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000551ae.bin
085c418e7dfd45506f35bfb2153c6db0a91b0e7c01e4af7fad4844897466bdb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x551AE 9600 bytes
font_01_sfnt_off00056d0f.bin
57581b4cebf921aceb5806ff1762b84f5f19d8fcea8ec0cf9f052f14b5fdbf0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56D0F 16284 bytes

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