Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7b8c4b01737c0b…

MALICIOUS

PDF

376.9 KB Created: 2015-08-23 20:55:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 2788e9d50710fb6a2517f1d9ea0c4da2 SHA-1: 4f9494ff93f2d5696b254f257bd74f9713371db1 SHA-256: 1e7b8c4b01737c0ba48ce8b3322bdeed73bbb30f54e8d5f497edf736d8a9e23e
92 Risk Score

Malware Insights

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

The PDF contains an embedded link that redirects to a known malicious domain, disguised with keywords related to a popular game and operating system. This indicates a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, limiting the analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9345

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=star+wars+knights+of+the+old+republic+%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+%D0%B4%D0%BB%D1%8F+windows+7&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690038_nfs__underground__2_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690040_obrazec__dopolnitelnogo__soglasheniya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690058_skachat__mod__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000596f0.bin
2e1357d71821baadaf506ad2c968ec77af3079d432dc700e3e4122bef3f0f46c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x596F0 11236 bytes
font_01_sfnt_off0005b585.bin
6a90b21d84152d6be1d8d569b89047d95a6fe0d3b35baf2feb069ead47dd44fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B585 14744 bytes

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