Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de21d465aea96c7…

MALICIOUS

PDF

367.0 KB Created: 2015-08-25 15:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: fce8aba8ba72ca8d8b0788b3ebd0e5cf SHA-1: e5eebb32021b123932b50b32eba27935cbd59b34 SHA-256: 7de21d465aea96c74a1fd6aa8923e912ff308e6477c30e347c1d7ac80eb85643
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL, http://botcraftman.ru/..., is confirmed to be a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body is heavily obfuscated and does not provide clear user-facing text, but the presence of the malicious link is sufficient to determine the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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%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%D1%8B%D0%B9+%D0%B0%D0%BD%D1%82%D0%B8%D0%B2%D0%B8%D1%80%D1%83%D1%81+%D0%B4%D0%BB%D1%8F+%D0%BD%D0%BE%D0%BA%D0%B8%D0%B0+5230&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731724_skachat__whatsapp__na_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732249_moduy__na__evro_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731597_skachat__drayver__panasonik_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005755f.bin
27bde691b05701fe9da0e6c9cb5a32ee1d62f8f8d2303a2c75033cd5105b8b13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5755F 9612 bytes
font_01_sfnt_off0005905a.bin
82bee91e10edc924e8e7edbf49782f5a7fbd8163faf5ce13a52eb86931522d03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5905A 14040 bytes

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