Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d095368b609a81e…

MALICIOUS

PDF

367.6 KB Created: 2015-08-24 02:09:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b63922e6adf12e19f5bc4b8fcda06b8d SHA-1: dff4d838ae96d09da3f25115c109ef57ce86985b SHA-256: 1d095368b609a81e20ff0d95c37a81a663e3b123eea70079d2c1b1968e5e511e
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'http://botcraftman.ru/'. This suggests the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for a high-confidence assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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%B0%D1%80%D1%82%D1%8B+%D1%80%D0%BE%D1%81%D1%81%D0%B8%D0%B8+%D0%B4%D0%BB%D1%8F+%D0%BD%D0%B0%D0%B2%D0%B8%D1%82%D0%B5%D0%BB+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%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+2015&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693335_skachat__knigu__zapiski_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695126_youlikehits_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693478_torgovuyy__perepoloh__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056ec3.bin
0eade24f979ba2f65f18b9662a0486931be8dcc5640147f8b5f827535103a8c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56EC3 9600 bytes
font_01_sfnt_off00058a00.bin
8fdebad54032b674f7bc44260eea98f1c9e367b9ad9ea257a8018aaeec2b4b8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A00 16852 bytes

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