Malicious PDF — malware analysis report

Static analysis result for SHA-256 5826b77c225decf1…

MALICIOUS

PDF

352.5 KB Created: 2015-08-24 02:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-24
MD5: 1a18012cb072773118e1daa173ec343c SHA-1: 3bcbe5b2c94f5df1c5dcf021b646869ae963ca8d SHA-256: 5826b77c225decf13cfd06c317c67e0d91ef1d355df3b3e527e287e568be587a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an intent to lead the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded link strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%BB%D1%8E%D1%87%D0%B8+%D0%B4%D0%BE%D0%BA%D1%82%D0%BE%D1%80+%D0%B2%D0%B5%D0%B1+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B8+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693568_skachat__igruy__na_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694059_skachat_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694610_dreamscenes__enabler__12_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53A1C 8756 bytes
SHA-256: 87cee92f7914df0da59e8dac09fc904011bded3a0979edbf98076cc6c719d3ed
font_01_sfnt_off0005540e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5540E 14884 bytes
SHA-256: 0710cf69b8bffb6c3da9750f314d74158a147741b22e3a74d4b170c82647c499

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