Malicious PDF — malware analysis report

Static analysis result for SHA-256 a74e0e0a5662e36f…

MALICIOUS

PDF

347.7 KB Created: 2015-08-24 00:42:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9e7162b8c63bffaa4b2915122aec85cd SHA-1: ce243a738b8e3c36f116dbea3103111cf032ad72 SHA-256: a74e0e0a5662e36f1ddb1a32fd385bd5d6a10eab95a95b387bae99a2bdf25c70
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL, http://botcraftman.ru/..., is highly suspicious and likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious link is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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%B8%D0%B3%D1%80%D0%B0+%D1%81%D1%83%D0%BF%D0%B5%D1%80+%D0%BA%D0%BE%D1%80%D0%BE%D0%B2%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B1%D0%B5%D0%B7+%D0%BE%D0%B3%D1%80%D0%B0%D0%BD%D0%B8%D1%87%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B2%D1%80%D0%B5%D0%BC%D0%B5%D0%BD%D0%B8&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693898_bmw__e39_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694299_skachat__programmu_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693548_gospodi__vozzvah_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005280c.bin
26ab4ac49054ae69533e79867313b2e65b057282b1a0aab52f229183ac7eff18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5280C 9340 bytes
font_01_sfnt_off0005419b.bin
25567ef8081b10389599e26055274986c055a1bebdf56c040ae2f263758f9ed5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5419B 14724 bytes

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