Malicious PDF — malware analysis report

Static analysis result for SHA-256 6737a090bc393616…

MALICIOUS

PDF

357.4 KB Created: 2015-08-23 20:56:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 01156365d963cb2b67376a1f0ec0d042 SHA-1: ff3e4207fb36e8fcf68617177931c91172a9c84c SHA-256: 6737a090bc3936162d52b2d0c5a923f4924015d2cad5fd5ff399588447a31a36
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a malicious redirector. The ML classifier also strongly indicates maliciousness. While no scripts were explicitly extracted, the presence of a malicious redirector suggests the document's purpose is to lure the user to a harmful site, likely for further exploitation or credential harvesting.

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=%D0%B3%D1%83%D1%84+%D0%BB%D1%83%D1%87%D1%88%D0%B5%D0%B5+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690069_skachat__knigu__fb_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690060_obrazec__prikaza__ob_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690074_skachat__drum__pads_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054c56.bin
5af80ce48230b973ca8a6490d91a78ba4a9880042b3c4fce104eaa9e8f278298		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54C56 8132 bytes
font_01_sfnt_off000563c7.bin
6d19dc277b4acffe411771e95684a9b1aa4086ab4e9e8988fd5a9dc18afdb7f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x563C7 16328 bytes

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