Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ca6b6d720470f4…

MALICIOUS

PDF

362.1 KB Created: 2015-08-25 09:14:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b709e1c1d99d8488b76d699d8bac3062 SHA-1: bffae78d24e5ccc2d87cc68825602d13f1ef6a0c SHA-256: 93ca6b6d720470f4a93aed8b6a82a056a9174257b34e7828ab45234c8270ebb3
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. The presence of this link indicates the document is designed to redirect users to a potentially harmful site. No scripts were extracted from this sample, and the document body was heavily truncated and unreadable, preventing further analysis of the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B3%D0%BE%D1%82%D0%BE%D0%B2%D1%8B%D0%B9+%D1%81%D0%B5%D1%80%D0%B2%D0%B5%D1%80+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+175+%D1%81+%D0%BF%D0%BB%D0%B0%D0%B3%D0%B8%D0%BD%D0%B0%D0%BC%D0%B8+%D0%B8+%D1%81%D0%BF%D0%B0%D0%B2%D0%BD%D0%BE%D0%BC&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725737_skachat__unturned_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725554_garmin__unlock__generator_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725421_skachat__antivirus__kasperskogo_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005623f.bin
3182cc362de6d367deb79eda0c8130b2a60e54df8b62ca089302907e967b898b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5623F 8240 bytes
font_01_sfnt_off00057a03.bin
0546598e019ec1d8b90a61a8a76a8ce06f67532a458d55c9ef84d7edf509bac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57A03 15060 bytes

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