Malicious PDF — malware analysis report

Static analysis result for SHA-256 d70dc35c3f9eb89a…

MALICIOUS

PDF

351.3 KB Created: 2015-08-23 20:53:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 1d6c914c26c8bbff0fb95c9aff09e6ac SHA-1: ac8656de15ae5b2a7a6742417725c4c25febc9ec SHA-256: d70dc35c3f9eb89a826dee891b54aeaf6e6168d92ab4da5772ed07990cfa8e19
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to 'botcraftman.ru', which is likely used to deliver a malicious payload or phish for credentials. No scripts were extracted from this sample.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%BD%D1%82%D1%80%D0%BE+%D0%B4%D0%BB%D1%8F+%D1%81%D0%BE%D0%BD%D0%B8+%D0%B2%D0%B5%D0%B3%D0%B0%D1%81+%D0%BF%D1%80%D0%BE+12&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690034_dnevnik__motuylka__reychel_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690036_oshibka__xray__16_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005389d.bin
545bc4bf28b9a9731689bba36fd1c21869e962684484cc88df6165d923ced7b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5389D 9312 bytes
font_01_sfnt_off00055399.bin
b47c81b4d9d50c648a39b6232e7e56510d8513bec160e54a67815b44189f7220		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55399 13504 bytes

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