Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a5965fb87ad7de7…

MALICIOUS

PDF

368.4 KB Created: 2015-08-24 00:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a9c1c34407638d40f88278b2de4fd503 SHA-1: a71cf327d8e65dacc6ada57952d904111487145a SHA-256: 3a5965fb87ad7de709ec06722e1be1960cf6cec43d83bb7540ea3b07de898509
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector URL, botcraftman.ru. This indicates the document is designed to lure users to a malicious site, likely for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%D1%80%D1%83%D0%BF%D0%BF%D0%B0+%D0%B2%D0%B5%D1%81%D0%BD%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693121_papki__peredvizhki__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693568_skachat__igruy__na_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694362_z4root__dlya__android_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057ba2.bin
4415d5c3b88bf537147efcdd44ab33482f03447ee03beec691090a7f5da5c47e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57BA2 8100 bytes
font_01_sfnt_off00059302.bin
edff25510327aa07076fef2f506cc7bf7fce19c573acf9ce26370099ee23c076		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59302 14968 bytes

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