Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3d299f5f92066f4…

MALICIOUS

PDF

362.1 KB Created: 2015-08-23 20:56:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e780fdfecb10bcd94d4d54cfb264eb9d SHA-1: 55b42b01de2b88816790770e6b96323f08357eb4 SHA-256: b3d299f5f92066f458349bfaf97312ef87ad669b1403bac70b99ae9790113e0d
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to deliver a malicious payload. The ML classifier also flagged this PDF with high confidence. The document body contains garbled text, but the presence of a malicious URL is the primary indicator of compromise. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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+%D0%B2%D0%B7%D0%BB%D0%BE%D0%BC+wi+fi+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690074_skachat__drum__pads_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690072_gandlyarka__i__payet_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690060_obrazec__prikaza__ob_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000563cf.bin
4a22894cbe6d3a110f7999a1cb862492ee3d3bf21d7ca4913f11dbc3bbf686fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x563CF 7496 bytes
font_01_sfnt_off000579b2.bin
02b8b7d1c23b2739b062533b49e77f66f622d8af68ed2a8fe3281a714994848f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x579B2 15188 bytes

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