Malicious PDF — malware analysis report

Static analysis result for SHA-256 31ed09129b072728…

MALICIOUS

PDF

351.8 KB Created: 2015-08-26 19:36:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: bb8c66bbde8a7df51991f5506e1f550f SHA-1: 9678fa20ffe6139ce887c37ec6df55583d535963 SHA-256: 31ed09129b0727289c45e16b49510cfabf6c4945e5db2b0e048edc0b482f8727
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The redirector URL is http://botcraftman.ru/. This suggests the document is part of a phishing or malware distribution campaign. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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+%D1%81%D0%B5%D1%80%D0%B2%D0%B0%D0%BA+%D0%B4%D0%BB%D1%8F+%D0%BA%D1%81+16&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762765_skachat__moduy__na_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762668_koduy__oshibok_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762905_film__ostrov__pavla_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053bdd.bin
3c3a1d16c34e47bc87f33bdb8b1e97cbe41a9038af7d29d0009b4cc199ee2e94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53BDD 8348 bytes
font_01_sfnt_off00055438.bin
b0a67a76e8077cc8d1fb813eeee94e29b573816f9aa8e3f750eadcb0eb900d0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55438 13544 bytes

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