Malicious PDF — malware analysis report

Static analysis result for SHA-256 a70b79dc5480a088…

MALICIOUS

PDF

359.7 KB Created: 2015-08-25 09:12:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 047df25c7fa21b54e9879ca9cff7ab46 SHA-1: c3c6b834ec84e1455bd0d8a2401ad56eb80c2b7d SHA-256: a70b79dc5480a088d06b0db699eac8d25bfcebdf29ecf017f96b60e8fc852f52
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL is likely used to direct users to a malicious website for phishing or malware distribution. No scripts were extracted from this sample.

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%D0%BE%D0%BB%D1%8B%D0%B5+%D0%B8+%D0%BD%D0%B0%D0%BF%D1%83%D0%B3%D0%B0%D0%BD%D0%BD%D1%8B%D0%B5+%D0%B4%D0%B8%D1%81%D0%BA%D0%B0%D0%B2%D0%B5%D1%80%D0%B8+%D0%B1%D0%B5%D0%B7+%D1%86%D0%B5%D0%BD%D0%B7%D1%83%D1%80%D1%8B&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725685_1_____.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725724_solid__edge__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725993_skachat__aasmolenceva__vvedenie_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005598c.bin
3b69040fa0cf49213d6e18e75b4e29d6874fe4882eceb577d362abfc69d02c54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5598C 8664 bytes
font_01_sfnt_off0005729d.bin
adf406b84b92bf65054b0337e2c9a9f795c5230e0c42aabce3331334b2282896		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5729D 14172 bytes

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