Malicious PDF — malware analysis report

Static analysis result for SHA-256 75bf9a10867aea90…

MALICIOUS

PDF

367.9 KB Created: 2015-08-24 00:20:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b79bb9fe8023cbee8c965d5f8f36635d SHA-1: 26eb622afd0c21a9a9bfb21abf2a0f711f2971c4 SHA-256: 75bf9a10867aea90a413f1e1d3d5908b8e8997fcd38105784cb9c4b57e390afc
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL indicates an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

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=%D1%81%D1%85%D0%B5%D0%BC%D1%8B+%D0%BE%D0%BF%D1%8B%D1%82%D0%BE%D0%B2+%D0%B8+%D1%8D%D0%BA%D1%81%D0%BF%D0%B5%D1%80%D0%B8%D0%BC%D0%B5%D0%BD%D1%82%D0%BE%D0%B2+%D0%B2+%D0%B4%D0%B5%D1%82%D1%81%D0%BA%D0%BE%D0%BC+%D1%81%D0%B0%D0%B4%D1%83&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693229_kruytuyy__katok__v_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693136_fotoshop__na__russkom_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693413_rukovodstvo__po__remontu_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000577cb.bin
0890f4847e7de8c0a66a41f92026f73f99ec58522082bfacae570019286167ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x577CB 10540 bytes
font_01_sfnt_off00059568.bin
dfb132c751c53e70791f675fc92299e468ec61d8ea22599a764f2ba136404537		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59568 13208 bytes

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