Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2f27e682706892d…

MALICIOUS

PDF

357.8 KB Created: 2015-08-24 06:08:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b06618f60f69f00b8491a358a9ba2c3b SHA-1: d525de53ed8a1c6c5eacde47583a190d5a478132 SHA-256: a2f27e682706892db880420c1be24ba22e0a42bf4d307ddc395933fa7e4eeb51
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating it is designed to lead users to harmful content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL is sufficient evidence for this assessment.

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=skillet+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B4%D0%B8%D1%81%D0%BA%D0%BE%D0%B3%D1%80%D0%B0%D1%84%D0%B8%D1%8E+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4697/4697545_bolshe__chem__igra_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4701/4701955_titruy__dlya__videomontazha_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4698/4698552_zhurnal__vhodnogo__kontrolya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000552d2.bin
fb55c791919dfc92d9c6c3c0f630c94f02f8c9aded06f3d680d8a982477579f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x552D2 9088 bytes
font_01_sfnt_off00056cda.bin
86230fb5929025fe82d925ec7a0a2d6f561b1d14827911b4bd0cdaa6292e200f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56CDA 13456 bytes

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