Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f7978e3e51c62b4…

MALICIOUS

PDF

364.1 KB Created: 2015-08-28 12:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 824fdb1cb8db0f0cebc598970401e090 SHA-1: 21fcf94e0e5f489d142020b922fb778558c3fce4 SHA-256: 5f7978e3e51c62b40c3437dc3601a88498e687fcb48297c6edd3ba869ce2cb04
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link pointing to 'http://botcraftman.ru/'. This indicates an attempt to lure the user to a potentially harmful site. Although no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%BB%D1%8E%D1%87%D0%B8+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B8+%D0%B4%D0%BB%D1%8F+windows+81&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802375_skachat__kontrolnuye__rabotuy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802382_russkaya__vyaz_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803149_skachat__serial__kuhnya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005692a.bin
3f6dbc929a4f3fbdbc44b421ab885d502f8921ef11b70eb16e89214f611a1ddf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5692A 9232 bytes
font_01_sfnt_off000583ae.bin
22f5f52e3d437a4593d228453ccd82a98a97274b7c377112e16ae42fbf7e303a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x583AE 14352 bytes

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