Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb04534cc068b783…

MALICIOUS

PDF

385.0 KB Created: 2015-08-26 10:22:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a6645c57ab00a5890f650ccd3aa4e1b2 SHA-1: 56b641b879f99c22838634ab327ac37e00d2961f SHA-256: bb04534cc068b78316c1871c4344728ed6fc9013a62909fbfe9610dbed123419
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. The document body appears to be heavily obfuscated or corrupted, preventing a clear understanding of its intended content beyond the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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+rise+of+nations+thrones+and+patriots+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751608_skachat__pourochnoe__planirovanie_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752479_skachat__igruy__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752358_ubrat__vokal__iz_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005bab7.bin
46ff7593d87542c9fbf8c84ce6336b4742b2fec8b32e6017328f5b9e0d88d0e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAB7 9452 bytes
font_01_sfnt_off0005d47b.bin
7c71a5661b9ee5d5555e9e43817bb1e7cd3c1665f61119889cba1696a402c349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D47B 15676 bytes

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