Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac398ff514ed4c24…

MALICIOUS

PDF

364.1 KB Created: 2015-08-26 13:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: dc46a95669667629536db9ff1ff1e373 SHA-1: 5cc16afe94732ae59deb3d453f6e71cce293e4ee SHA-256: ac398ff514ed4c2458423f35b55fafde9787a65585e6f11b70085d57a129722f
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. This indicates the document is likely a lure to direct users to a malicious website. The embedded URL http://botcraftman.ru/?lip&keyword=%D0%B4%D0%BE%D0%BF%D1%83%D1%81%D1%82%D0%B8%D0%BC%D0%be%D0%b5+%D1%81%D0%BE%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%b5+%D0%b0%D0%bb%D0%ba%D0%be%D0%b3%D0%be%D0%bb%D1%8f&charset=utf-8 is the primary indicator of this malicious intent.

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%B4%D0%BE%D0%BF%D1%83%D1%81%D1%82%D0%B8%D0%BC%D0%BE%D0%B5+%D1%81%D0%BE%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B0%D0%BB%D0%BA%D0%BE%D0%B3%D0%BE%D0%BB%D1%8F&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4753/4753277_fayloobmennik__do__1_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4754/4754730_skachat__chit__ot_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4753/4753402_plan__podgotovki__k_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000564d6.bin
41b262632e675c3c9e898f21418b3da7787e04caa7539e64bdfa88751f0043d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x564D6 11252 bytes
font_01_sfnt_off0005841a.bin
690ff4a26350c11b0936019b7374485afe7bda991c79bcbe972b1bd60600571a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5841A 14236 bytes

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