Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00c225d449b61aa…

MALICIOUS

PDF

362.8 KB Created: 2015-08-26 11:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b7caba09b8e9f966ca337f5ec018f609 SHA-1: abe991c1f28cf4bdfd097d78f96f9bcfc8299b61 SHA-256: b00c225d449b61aa266164a0417bb3f67d5c9395ea5d5fff05ed4bdfefc37f51
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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=%D0%A0%D0%B5%D1%86%D0%B5%D0%BF%D1%82+%D0%BA%D1%83%D1%80%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%BE%D0%B9+%D1%81%D0%BC%D0%B5%D1%81%D0%B8&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752313_klyuchi__aktivacii__vindovs_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752811_na__nokia__5228_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4753/4753397_obrazec__raspiski__zadatka_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000565c1.bin
271c320807e51296bb4a34f0871279e9fac8fbc8ba70309d0bcc2628d56f7dc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x565C1 7896 bytes
font_01_sfnt_off00057c65.bin
ffaeaf8c8eb0f1ab7665fdf12c5142a5af7abc98ea13e05a5ad72f40925e2ce8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C65 15212 bytes

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