Malicious PDF — malware analysis report

Static analysis result for SHA-256 626db549001a665e…

MALICIOUS

PDF

353.7 KB Created: 2015-08-22 08:57:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c2581c76d03ebc9895468c6ea89f86c5 SHA-1: ba9aa1cd00418a24b799d851a2b23cbbefef1b01 SHA-256: 626db549001a665e4ee5404852b35841f344d576d4da1b5f2daee2b4e31a6278
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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%BB%D1%8E%D1%87%D0%B8+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B8+%D0%B2%D0%B8%D0%BD%D0%B4%D0%BE%D0%B2%D1%81+7&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674527_vadim_panov_dikie_persuy_skachat_fb2.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674545_instrukciya_po_razborke_nikon_d3100.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674533_rusifikator_dlya_hellgate_global.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053dcb.bin
c9ff495e73d1f4bc1956a96d608495bd9650b05302173c27831a65e35fcf6aa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53DCB 8016 bytes
font_01_sfnt_off00055573.bin
d1d9b97d4e3ec5075c0e732c418cac240469a7337c51de7c62a10216a4000386		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55573 16264 bytes

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