Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c60892ee8bb8cd2…

MALICIOUS

PDF

376.1 KB Created: 2015-08-26 10:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 11d53890a701fc85c061558e1039eb83 SHA-1: 99036c0394f9221b8ab095ab7ec20acdb186112f SHA-256: 3c60892ee8bb8cd28af33e0702bda5af4273880b00bece7d8814d52a466157bc
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 infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily obfuscated, preventing further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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%A4%D0%BB%D1%8E%D0%B3%D0%B5%D1%80%D1%8B+%D0%B2+%D0%BA%D0%B0%D1%80%D1%82%D0%B8%D0%BD%D0%BA%D0%B0%D1%85&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752342_1s__buhgalteriya__82_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752456_samouchitel__koreyskogo__yazuyka_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751834_deystviya__so__stepenyami_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059c1b.bin
01b29be0797509a6c9947c7b5e98a1eee119e383ff85b47494965449073a9397		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59C1B 9464 bytes
font_01_sfnt_off0005b5b7.bin
a047f319e9ceaa263c7473d766b578cecb83f3b519bdf4c6da2f3370e7369eb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5B7 13476 bytes

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