Malicious PDF — malware analysis report

Static analysis result for SHA-256 663c0c9aff945b6e…

MALICIOUS

PDF

353.3 KB Created: 2015-08-29 11:54:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-23
MD5: 1490d5eb8cdf98ebfb1f97b293a7eb86 SHA-1: 2ec5902b1e6c448a28850b65dc1f149234d7c5b0 SHA-256: 663c0c9aff945b6eb86051af88db76d6f176ad6b5957708e9f272c64f4c85461
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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%BD%D0%BE%D0%B7%D0%B8%D1%8F%D0%B8+%D0%BA%D0%B0%D1%80%D0%BE%D0%BC%D0%B0%D1%82%D1%83%D0%BB%D0%BB%D0%BE+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830522_flesh__pleer__skachat_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830120_akt__vnedreniya_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830956_avtovokzal__lebedyan__raspisanie_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53987 8408 bytes
SHA-256: 43d9db24953c0da24d3fb2d53de3326224c32301ae9a6cee5e9868f636c3fcff
font_01_sfnt_off00055207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55207 17100 bytes
SHA-256: a13470da26f1e0abdec6ed0a7590d4a8a26e87fc39bae8652cf5e9bd5c0d5921

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