Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25ffb0e0dc308c2…

MALICIOUS

PDF

356.4 KB Created: 2015-08-23 21:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 08d8d029425d802834022feab8ed3391 SHA-1: 536569e9fcfc3025027ea43b425a5082a6e7dacb SHA-256: e25ffb0e0dc308c2b41927df899fb89657b11f62ca7f0a687c455c9e2ebf028d
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to a known malicious redirector at http://botcraftman.ru/. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly supports the malicious nature of this file. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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%88%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD%D1%8B+%D0%BF%D1%80%D0%B8%D0%B3%D0%BB%D0%B0%D1%88%D0%B5%D0%BD%D0%B8%D0%B9+%D0%BD%D0%B0+%D1%81%D0%B2%D0%B0%D0%B4%D1%8C%D0%B1%D1%83&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690091_guf__luchshee__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690139_ivanovo__detstvo__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690149_tricikl__iz__motocikla_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054863.bin
075114eee04cbe691d6e6c4ce5f5cdd489cf3e27909fdcace6298a2884d13ca6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54863 10956 bytes
font_01_sfnt_off00056647.bin
19382e755bc7a908a322cdaecf9a9cf0b59929ff4fd4fd38ca365203a7953289		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56647 13720 bytes

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