Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d876b108dffa617…

MALICIOUS

PDF

364.0 KB Created: 2015-08-29 09:42:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 324d0bb4a1dca8393e309af7b86a66d4 SHA-1: 0ac89abfcdf2599adb58dd5e4633399a6c81f6b8 SHA-256: 2d876b108dffa617ff4d470f492ec6d2df6a35a3d5ceeed834add35746423ab0
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. The embedded URL, http://botcraftman.ru/, is likely used to direct users to a malicious website for phishing or malware delivery. No scripts were extracted, but the presence of the malicious URL strongly suggests a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%83%D1%81%D0%BB%D0%BE%D0%B2%D0%BD%D1%8B%D0%B5+%D0%B8+%D0%B1%D0%B5%D0%B7%D1%83%D1%81%D0%BB%D0%BE%D0%B2%D0%BD%D1%8B%D0%B5+%D1%80%D0%B5%D1%84%D0%BB%D0%B5%D0%BA%D1%81%D1%8B+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D1%80%D1%8B&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4819/4819306_amerikanskaya__istoriya__uzhasov_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4825/4825125_rostelekom__logotip_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818186_obrazec__napisanie__cifr_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056a1b.bin
f70fdd7207ebb3ea916d87eca2821eb97b53b6b5fb3b0aed6db6f19e81fc85bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A1B 8028 bytes
font_01_sfnt_off0005818e.bin
29c1eb93625bac4bdc9dde5528eda56708c87d900965df77240bd2b84141af90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5818E 14860 bytes

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