Malicious PDF — malware analysis report

Static analysis result for SHA-256 20a57fd5c7f9be16…

MALICIOUS

PDF

352.3 KB Created: 2015-08-24 21:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 83ad68ebd57d096d221d972f6f49dce9 SHA-1: 3adf1f4d9098e0bf2054eea482cf6d839d44db4d SHA-256: 20a57fd5c7f9be167097efcdee136df1118451d5141f79f6c01f66883f4776a6
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/. This heuristic indicates the document is designed to lead the user to a potentially harmful site. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure. The primary attack vector appears to be the embedded malicious URL.

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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%B7%D0%B0%D0%BF%D0%B8%D1%81%D0%B8+%D1%81+%D0%B2%D0%B5%D0%B1-%D0%BA%D0%B0%D0%BC%D0%B5%D1%80%D1%8B&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4706/4706319_raspisanie__trolleybusa__21_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4707/4707203_fikbuk__mobilnaya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4709/4709295_windows__7__maksimalnaya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000537b3.bin
c1f87cf5b4eff104674f65b447ea2168ce8333d92e6d3faffe73ca3589577fb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x537B3 8912 bytes
font_01_sfnt_off000550ed.bin
6dc113981fabb7d3e3811f1aa881b5b3cd134534e3865977892bba805cd4cc82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x550ED 15664 bytes

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