Malicious PDF — malware analysis report

Static analysis result for SHA-256 32853dceddbe645e…

MALICIOUS

PDF

362.6 KB Created: 2015-08-29 01:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ba637e28a27ca6dbd6e900406f6659e8 SHA-1: f000f0d709720c554e0f4f11c8feeda13491c7ec SHA-256: 32853dceddbe645ef0343b8f2edc7aa2e2b41de74e364dd704ed2c8a1e999227
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 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 strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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%BD%D0%B8%D0%B3%D0%B8+%D0%BF%D0%BE+%D0%BC%D0%B0%D0%B3%D0%B8%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817930_severnuye__goroda__rossii_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817611_podat__zayavlenie__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817500_skachat__sovetskie_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000562fe.bin
6160812444fe22f50e21003eacd9d163bcad2c2120967a8e5f91ae2d3f0d1e96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x562FE 9292 bytes
font_01_sfnt_off00057cd1.bin
f47e3abe928fae6bdbeb498f3c359cb8d4b6c40b4b73ae69b96cf60bfdbf5833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57CD1 14456 bytes

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