Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d2cde83964e480…

MALICIOUS

PDF

352.7 KB Created: 2015-08-25 15:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 5972387a0a64eb6edc4b08ce4df890cb SHA-1: f9a6860ce390ca46d4f59f2ebfeeb2eea2b96219 SHA-256: e3d2cde83964e4807b69957635a5c640017d0e523995b3af390dd94ae3249c8f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of a malicious URL strongly suggests a 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+%D0%B4%D0%BB%D1%8F+%D1%81%D1%8A%D0%B5%D0%BC%D0%BA%D0%B8+%D1%81+%D0%B2%D0%B5%D0%B1+%D0%BA%D0%B0%D0%BC%D0%B5%D1%80%D1%8B&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731784_skachat__mod__lesozagotovka_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731635_skachat__patch__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731662_skachat__pesni__iz_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053a40.bin
bf7a3c7cb4891dd67829db67bde205d51e2fc424450b6c158cdedba4edeea0c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53A40 8516 bytes
font_01_sfnt_off000552e0.bin
a2836ea85e918ed465e1ecd33388dafa60e332b56a967d2cc8f0374d9fd220ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x552E0 15616 bytes

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