Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb55a656e448fad…

MALICIOUS

PDF

357.2 KB Created: 2015-08-26 11:36:13 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: dd4030f370b31eee99423b920d551b73 SHA-1: 37235a4d8a630fa44e2abaa84d8f9190041dd0ee SHA-256: ebb55a656e448fadb773be13bfca3c83f9261378570a66d0bed59782c767a3fa
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirector infrastructure. No scripts were extracted, and the document body was heavily obfuscated, preventing further analysis of the document's specific lure.

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=rick+ross+%D0%B4%D0%B8%D1%81%D0%BA%D0%BE%D0%B3%D1%80%D0%B0%D1%84%D0%B8%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4753/4753851_prakticheskaya__rabota__2_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4753/4753582_skachat__muzuyku__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4753/4753814_kogda__budut__izvestnuy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054f0b.bin
c996b032a17ce8396e08b2c4b774d80e5840b3c3fc7423e45de738b5f2b8c960		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54F0B 9052 bytes
font_01_sfnt_off000568e3.bin
6de322ffaa0d8e3f0c698cc92fc067c46c6d6cc5b7a12843e9670c694efc0579		 pdf-font-stream PDF embedded font (sfnt) at offset 0x568E3 14168 bytes

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