Malicious PDF — malware analysis report

Static analysis result for SHA-256 6889219e33877747…

MALICIOUS

PDF

375.9 KB Created: 2015-08-29 01:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 3be77485dc62f4d814b3c43c6b60b051 SHA-1: f032d72a3c1b75723828ebd69832938d584ab3ee SHA-256: 6889219e33877747cf179739ba6aac13ed46be1aadc3bc0f13dfa59e55e59bf6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of a malicious redirector is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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%80%D1%83%D0%BA%D0%BE%D0%B2%D0%BE%D0%B4%D1%81%D1%82%D0%B2%D0%BE+%D0%BF%D0%BE+%D1%80%D0%B5%D0%BC%D0%BE%D0%BD%D1%82%D1%83+%D1%84%D0%BE%D1%80%D0%B4+%D1%84%D0%BE%D0%BA%D1%83%D1%81+2&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817621_torg__2__blank_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818043_knigi__po__magii_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818086_skachat__kemulyator__androida_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059e55.bin
07e8ed3fc69060b85130fd51328e7809882066989ca76a31a0e0686398809001		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59E55 8352 bytes
font_01_sfnt_off0005b59f.bin
0ee5e1143bf98b775f7ff1c767124ccf0b5947adee0f50d86f56ae6502e5b92a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B59F 13336 bytes

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