Malicious PDF — malware analysis report

Static analysis result for SHA-256 4310551fb4156d42…

MALICIOUS

PDF

350.8 KB Created: 2015-08-26 11:53:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c1f7e2d6109533a935f0c45432fc8b44 SHA-1: 050cddf81b55285180a4bad7e97c46e98795b107 SHA-256: 4310551fb4156d42da0f62fee70ad9d0a14098c883cac0a871f7bcd71cb8914c
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL, http://botcraftman.ru/, is likely part of a phishing or malware distribution chain. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

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%BA+%D0%B8%D0%B3%D1%80%D0%B5+%D0%BE%D1%85%D0%BE%D1%82%D0%B0+%D0%BD%D0%B0+%D0%B2%D0%B5%D0%B4%D1%8C%D0%BC&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752193_grigoriy__leps__tekstuy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752730_programma__bars_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4754/4754000_koduy__tamozhennuyh__postov_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000537f6.bin
f782ca0e3f5e06158a028473ce07be4a4ac491e4287a9ef2edc883dab8d0cffb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x537F6 9752 bytes
font_01_sfnt_off00055216.bin
48e7bd8d9728579a9e4760560389ddc942976a51d3dc1046989dd588e40c4785		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55216 13604 bytes

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