Malicious PDF — malware analysis report

Static analysis result for SHA-256 e036d4d4fed8883e…

MALICIOUS

PDF

369.3 KB Created: 2015-08-26 10:23:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ab57c0098f78337b126cdb04b9055961 SHA-1: 2b59f5c21e26f42846efe1c7507f45a5ef0439be SHA-256: e036d4d4fed8883ec66ed291e9e27c432eb4dc1da326f638cc7734a32b9087fc
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 containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/?lip&keyword=%D1%85%D0%B2%D0%BE%D1%81%D1%82+%D1%80%D1%83%D1%81%D0%B0%D0%BB%D0%BA%D0%B8+%D0%B4%D0%BB%D1%8F+%D1%81%D0%B8%D0%BC%D1%81+3&charset=utf-8, is the primary indicator of compromise. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%85%D0%B2%D0%BE%D1%81%D1%82+%D1%80%D1%83%D1%81%D0%B0%D0%BB%D0%BA%D0%B8+%D0%B4%D0%BB%D1%8F+%D1%81%D0%B8%D0%BC%D1%81+3&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752371_skachat__drayvera__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751917_skachat__proshivku__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752359_viking__inviter__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057de8.bin
480db8f5b96e2c9d8de399517c96080e64c106bac58a31d4d24e5aeb7174b3c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57DE8 7964 bytes
font_01_sfnt_off0005953d.bin
7f0e75721277a0fc297c8a7ac9f23cf2d20a087cd0ddb85280477b14cb92cce6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5953D 15296 bytes

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