Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b34f00808adf59…

MALICIOUS

PDF

364.3 KB Created: 2015-08-28 00:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d6e1852ca7539785c013ea2da191e2b8 SHA-1: 3ac5025aadf6d42393e081b7fb89a5af16abc392 SHA-256: e5b34f00808adf59cf752884270cfea257759ad75c721122bb87f91b384b6924
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/... is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%D1%83%D0%BA%D0%BE%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9+%D1%81%D0%BF%D0%B5%D0%BA%D1%82%D0%B0%D0%BA%D0%BB%D1%8C+%D0%B4%D0%BB%D1%8F+%D0%B4%D0%B5%D1%82%D0%B5%D0%B9+%D1%81%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788085_dogovor__arenduy__kafe_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787798_____lumia_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787817_chto__delat__esli_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056a47.bin
9ca448043f17f88e4239647737338cf027cdf0a08d3351b874fdc04f6f981bea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A47 8536 bytes
font_01_sfnt_off000582d9.bin
3b22141e1b1540d123aba3eb78278428225289fade3b2a0c539742bec66ba87e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x582D9 15140 bytes

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