Malicious PDF — malware analysis report

Static analysis result for SHA-256 18633729c1b12690…

MALICIOUS

PDF

347.4 KB Created: 2015-08-25 22:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-06-17
MD5: 4645aebe0e99305a6d21cb2a7753b775 SHA-1: 7c32f6ccc2b9dbf517abf1d59e0c266fa7067296 SHA-256: 18633729c1b12690c9a31fb943eadc8ac23dc0c5b5f030538f2e218e610cacfd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an intent to deliver a secondary payload or phish for information. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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%B2%D0%B8%D0%B7%D0%B8%D1%82%D0%BA%D0%B0+%D1%82%D0%B0%D0%BA%D1%81%D0%B8+%D1%88%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740774_skachat__besplatno__proektuy_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740652_skachat__windows__7_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740575_volshebnaya__istoriya__zhasmin_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52976 7564 bytes
SHA-256: 5bf7f46e4ed9e1536d677993ab0e3e2c36b0479761d92d007d7c8646f1001a0e
font_01_sfnt_off00053f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53F7B 14744 bytes
SHA-256: 62c670330b198fbe5453c96a542f49b998a30ec7882b93dbc1ed3200cfe6c318

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