Malicious PDF — malware analysis report

Static analysis result for SHA-256 129093ac435ddee2…

MALICIOUS

PDF

348.3 KB Created: 2015-08-23 21:26:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 3b09507560d4f780a69c1b369da81902 SHA-1: 8b3ea8b8e9a7116e2f9f3510b39c658617c29675 SHA-256: 129093ac435ddee21b34b63bb4ca3b56ccb8dd52fd1b2b0249bb626ee7106e0f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and contains a link to known malicious redirector infrastructure. This suggests the document is designed to lure users to a malicious site, likely for phishing or malware distribution. No scripts were extracted, but the presence of a malicious URL is a strong indicator of 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=%D0%BA%D0%B0%D0%BA+%D0%B2+%D1%81%D0%B8%D0%BC%D1%81+2+%D0%B7%D0%B0%D0%B1%D0%B5%D1%80%D0%B5%D0%BC%D0%B5%D0%BD%D0%B5%D1%82%D1%8C+%D0%BF%D0%BE%D0%B4%D1%80%D0%BE%D1%81%D1%82%D0%BA%D1%83&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690283_lightroom__4__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690169_serzh__goreluyy__predvaritelnuye_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690145_borland__delphi__7_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000527e2.bin
e4181b53f3311820f582c7a8acf21cb82fe2e8d9a1407de68b36412f74ec1f61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x527E2 9376 bytes
font_01_sfnt_off000542d3.bin
a9c4c9b20209d31ddc83603485fe5bb5dc8f9a516526b91ce040c1ac7c328b7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x542D3 15616 bytes

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