Malicious PDF — malware analysis report

Static analysis result for SHA-256 1135f777d8434cd6…

MALICIOUS

PDF

362.9 KB Created: 2015-08-19 14:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 8d19d29299d56a31517ec48779c62465 SHA-1: b07c0d7b9f371dfeae2ae1c96f54cf49cb899194 SHA-256: 1135f777d8434cd63f664b1107643d5b0a88bba31757e0940c3d5bb3f85acf94
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is identified as a malicious redirector. While no scripts were extracted, the presence of a malicious link strongly suggests an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

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=goofball+goals+full+1153+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626854_ct_po_russkomu_yazuyku_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626812_korotkie_roliki_full_hd_roliki_priroda.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626699_semeystva_revit_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056005.bin
a90115137ea5101ffa3d9cb975d5a19d89e34cf8d758f2d11ed3a082a95bcb44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56005 9404 bytes
font_01_sfnt_off00057b05.bin
f1f8219c079026c2cbf4209ecdf46275327eabb444ef90eaaa8afdaa6b20c849		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B05 15868 bytes

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