Malicious PDF — malware analysis report

Static analysis result for SHA-256 a48758079b3cfd5a…

MALICIOUS

PDF

362.3 KB Created: 2015-08-26 10:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ae472197fa4c043de6f5d5339cdc9cee SHA-1: d4268be23f2e8a0c331d61fb3a30dca6dc65c59d SHA-256: a48758079b3cfd5a1fcc5aaa5f798a4701ea1220161888033d354675ddc9168c
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, http://botcraftman.ru/. This indicates the document is likely part of a phishing or malware distribution campaign. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%B2%D0%B0%D0%BB%D0%B5%D1%80%D0%B8%D1%8F+%D1%87%D0%B0%D1%88%D0%BA%D0%B0+%D1%87%D0%B0%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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/7//4751/4751698_windows__xp__home_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751588_razmeruy__lestnicuy__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751608_skachat__pourochnoe__planirovanie_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055d59.bin
7fc3da729073fa9237f48789d9e552753c2e02ba5c29e338775f19a7501285bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55D59 8760 bytes
font_01_sfnt_off000576cd.bin
840928d2aa0179d119ef5ff7d603b56258b41f70fa265abd4d291154cfd71512		 pdf-font-stream PDF embedded font (sfnt) at offset 0x576CD 17196 bytes

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