Malicious PDF — malware analysis report

Static analysis result for SHA-256 d13e6525e142eb99…

MALICIOUS

PDF

345.3 KB Created: 2015-08-27 23:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 28e755d5ed6f1793f5b1b7496ad5d0b8 SHA-1: 29c26f7475057e2e072526dde71141dd1b50c2cb SHA-256: d13e6525e142eb999354c4ad61ce39e2f1fcd777d70f36fcd062221466cc5213
92 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 known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to a harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%BF%D0%B5%D1%81%D0%BD%D1%8F+%D0%BF%D1%80%D0%BE+%D0%BF%D0%BE%D0%B4%D1%80%D1%83%D0%B3%D1%83+%D1%82%D0%B5%D0%BA%D1%81%D1%82+%D0%BF%D0%B5%D1%81%D0%BD%D0%B8&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788119_natural__english__intermediate_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787920_detskie__raskraski__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788061_istoriya__pugacheva__kratkoe_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051a74.bin
2b8dccd86a368c3a96af6a74b41c83b9770605cd624bfe253b5265d50f772b5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51A74 8328 bytes
font_01_sfnt_off00053285.bin
d62185e8ba5e20f142348b6c139101491dab2a16148fc9a870dd5b6ca19d8c79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53285 16844 bytes

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