Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d56964f65b2e74c…

MALICIOUS

PDF

377.6 KB Created: 2015-08-24 00:09:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d82f50054d16f84f257d5ec6c4ae143b SHA-1: 4eaf2d404e1a8c0715b931ea9cce7911760fd5b7 SHA-256: 3d56964f65b2e74c208d1326ea7076753636237569af26469fe8d030e77bd5d8
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/. This heuristic firing, combined with the ML classifier's high confidence, indicates the document is designed to lead the user to a harmful site. No scripts were extracted, but the embedded URL 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=50+%D0%BE%D1%82%D1%82%D0%B5%D0%BD%D0%BA%D0%BE%D0%B2+%D1%81%D0%B5%D1%80%D0%BE%D0%B3%D0%BE+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+txt+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693891_komanda__na__komandnuyy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694015_wolfenstein__vrata__vremeni_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693085_gta__5__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059954.bin
79876f68cd21ca137b879d6490eb153b151703cdc91495532a5c9b7c015997ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59954 9852 bytes
font_01_sfnt_off0005b511.bin
3aa8769880e81e8776d1a831b68b5106318cc7fb3695122c23987b8d8e44ca66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B511 16228 bytes

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