Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e1a1ef938676a2a…

MALICIOUS

PDF

373.9 KB Created: 2015-08-28 18:59:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: fc7ecdc0dcaacbab6364ab219710cf28 SHA-1: bdb895ba527f28ef11f79057e34b4266b6eb3ca4 SHA-256: 7e1a1ef938676a2abe3cf1758b9663f8af3631e7f31260ad00759302252b95df
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL 'http://botcraftman.ru/?lip&keyword=antibk+2012+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8' is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious link suggest an attempt to lure the user to a compromised site, likely as part of a phishing or malware delivery chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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=antibk+2012+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810673_samuye__populyarnuye__rossiyskie_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810124_t__aktivin_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809813_alyans__raspisanie__avtobusov_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059436.bin
d14906a3ea18c38158d2c71ff187575035182677b978fcbe471fd97f797af195		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59436 8532 bytes
font_01_sfnt_off0005acce.bin
e0e9f75199541378ca1b523320859cf12193cf7bd448c3c3df708abef05b6b77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACCE 13576 bytes

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