Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad9a29f23a2f467b…

MALICIOUS

PDF

342.7 KB Created: 2015-08-28 11:36:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: cf38c224513c86a8fa1c641620a7a18d SHA-1: 036fc76d716118a3cc96889f46707cc9c1680d73 SHA-256: ad9a29f23a2f467b8069b9b6fac2a9c210ac95b4f9f3fef3c1f1ba2510006362
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and contains a direct link to a known malicious redirector infrastructure. The document body is heavily obfuscated and unreadable, suggesting it is not intended for human consumption but rather to host malicious links or exploit vulnerabilities. The primary IOC is the malicious redirector URL, which is likely the first stage of a multi-stage attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%D1%83%D0%BF%D0%B5%D1%80+%D1%81%D1%83+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802459_skachat__drayver__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802445_virtual__router__plus_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802365_funbox__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000512c6.bin
d35a27a17abee92811e207ba88f029dbe25b946553d8c4b0616f37e2b702ebb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x512C6 7892 bytes
font_01_sfnt_off000529d1.bin
8031579d75f8dc244ff14ef2ac50f28499ad8debdeca1895e0e2e6358707c4b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x529D1 16568 bytes

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