Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc9bcc0e91e21fa…

MALICIOUS

PDF

347.2 KB Created: 2015-08-29 13:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: 585ed0292206f07d093258271b8d51d7 SHA-1: a58e09e8029753d75a57b6a9901316f9176ef6d8 SHA-256: 4cc9bcc0e91e21fa7dac5bd0aa69cc1cc6f948e20be8e02eff888373472b6f3e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL is a high-confidence indicator of malicious intent.

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%BF%D1%80%D0%B0%D0%B4%D0%B0+%D0%BE%D1%84%D0%B8%D1%86%D0%B8%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9+%D1%81%D0%B0%D0%B9%D1%82+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829934_tina__terner__skachat_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4832/4832494_raspisanie__avtobusov__tver_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4831/4831286_rekomendacii__v__rezyume_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052c13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52C13 8216 bytes
SHA-256: 29d7f7a2a7bede8be23df17bed313d543cf328ab4db5ba42533188bf1a199911
font_01_sfnt_off000543a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x543A4 12948 bytes
SHA-256: 0e52aca5e417f5c5fb71bea6ac41aeb88b30799a7931b278d842595eed5b596e

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