Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbf62d391434a354…

MALICIOUS

PDF

355.9 KB Created: 2015-08-29 13:49:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d90f624e64cd6555604a99286e9c26e0 SHA-1: a8aad012a11db1f295202dce154b7ca3d5a1ebc3 SHA-256: bbf62d391434a354c07c210b140fd854514ab6779bc3a64493206894f10f16ff
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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. While no scripts were extracted, the presence of the malicious URL is sufficient evidence of malicious intent.

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=%D0%BC%D0%B8%D1%88%D0%BA%D0%B8+%D1%82%D0%B5%D0%B4%D0%B4%D0%B8+%D0%BC%D1%83%D0%BB%D1%8C%D1%82%D0%B8%D0%BA+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4832/4832932_skachat__taz__v_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830534_skachat__vzlomannuyy__angry_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4831/4831398_sobache__serdce__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000548af.bin
c5e69fad0fbe46d7c80808a6e5bdc30f47462f12f7b35a0cb1e49c0ebf6abc67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x548AF 7932 bytes
font_01_sfnt_off00055fcf.bin
93d88be4628ce68db0461ec06491fa6f45910a508dc2d9523e236be4b5df4249		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55FCF 15552 bytes

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