Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb2e2e4c3f2d4220…

MALICIOUS

PDF

361.3 KB Created: 2015-08-25 22:08:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f264b15eff48e5121d682bbb2ddfe45d SHA-1: 3ebb442cfd12a64014ab9886929faffc9084f205 SHA-256: fb2e2e4c3f2d4220d3ef9b945ea75e9ff1f1dea03cc5e13f15080e74d736e21e
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, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily obfuscated and truncated, preventing further analysis of the specific lure.

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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%8B+%D0%B4%D0%BB%D1%8F+%D1%81%D0%B8%D0%BD%D1%82%D0%B5%D0%B7%D0%B0%D1%82%D0%BE%D1%80%D0%BE%D0%B2&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740551_klyuch__dlya__igruy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740558_rabochaya__programma__po_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740555_shema__opovescheniya__pri_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055d57.bin
dffa33919f1491e31ff09e0ff12206298f51f907aff04ba5f17c1967a7e12f74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55D57 8488 bytes
font_01_sfnt_off00057630.bin
f4443b1c0550dd3f66ac0d9ddc6962a0b1b5997de5496c8e13da7621e036d65e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57630 15240 bytes

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