Malicious PDF — malware analysis report

Static analysis result for SHA-256 415d4d54bcfe5fc4…

MALICIOUS

PDF

371.1 KB Created: 2015-08-26 12:29:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-10-27
MD5: 4fc4ddd665c49453f94eab6af441c98f SHA-1: 0e477ad40cc52ec72b55afdcc7784037211fb859 SHA-256: 415d4d54bcfe5fc4af63230bd2a5fdc6536c298c7f3aa4ca0e5b952096e1d77e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is likely intended to deliver a secondary payload. The document body, though heavily obfuscated, contains text fragments suggesting a lure for downloading animations for Windows 7, aligning with a phishing or social engineering attack. No scripts were extracted, but the presence of a malicious URL and the ML classification strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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%B0%D0%BD%D0%B8%D0%BC%D0%B0%D1%86%D0%B8%D0%B8+%D0%BD%D0%B0+%D1%80%D0%B0%D0%B1%D0%BE%D1%87%D0%B8%D0%B9+%D1%81%D1%82%D0%BE%D0%BB+%D0%B4%D0%BB%D1%8F+windows+7+%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//4752/4752212_kod__oshibki_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4753/4753724_skachat__sims__fripley_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752922_zapusk__programmuy__nevozmozhen_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000581f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581F6 9564 bytes
SHA-256: 37e691711a2b8781f6ac0828b3ba39fe7e0006ac7596098b244dc47e68aa3492
font_01_sfnt_off00059d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59D60 15188 bytes
SHA-256: 9e74e3af1264b3189a7c79f39a797e65775b0a884481446f7795dfa102f39480

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