Malicious PDF — malware analysis report

Static analysis result for SHA-256 5889e8708c380f25…

MALICIOUS

PDF

343.1 KB Created: 2015-08-26 10:06:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b2745728c52728ad9a0962ba0f708ad7 SHA-1: d57d7376061c577cc0eeca7268eda5b575073803 SHA-256: 5889e8708c380f25de8661e081b387fe5c5c842d9556cdbf77d0bb92a925e85a
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The embedded URL is likely used to deliver a secondary payload or redirect the user to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BD%D0%B5%D0%B7%D0%B0%D0%BA%D0%BE%D0%BD%D1%87%D0%B5%D0%BD%D0%BD%D1%8B%D0%B9+%D1%80%D0%BE%D0%BC%D0%B0%D0%BD+%D0%BD%D0%BE%D1%82%D1%8B&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751647_privetstvie__kvn_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751875_prilozhenie__vk__moi_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751904_klyuch__na__vindovs_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000517ff.bin
c77cfa1e33b378a0eb3be419f996922fd290c2aaa3974e23113e2926a3a29bdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x517FF 7664 bytes
font_01_sfnt_off00052dab.bin
ee64f58bf6864ff782fdb995463f1e7684e2def2f630a32bae115fba295f7e5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52DAB 14728 bytes

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