Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d95bb6cfdbd6f9…

MALICIOUS

PDF

344.0 KB Created: 2015-08-27 09:47:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 1273cd5784012eb1ede993027cdb68af SHA-1: a0905ac64ae62bbece32d176af8b575235fde109 SHA-256: 58d95bb6cfdbd6f9993cdbef91f6a869aa474495da0328d037168f51363e0467
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, 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 truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%BA%D0%BB%D1%8E%D1%87+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B8+%D0%BD%D0%B0%D0%B2%D0%B8%D1%82%D0%B5%D0%BB&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771961_mount__and__blade_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771800_igo__primo__9_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771792_skachat__igo__8_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051429.bin
ce235ffa8f6fa23f55bf14b4fc2da7b55b7db0044f95e70f3563c6e406b43ee5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51429 8604 bytes
font_01_sfnt_off00052d1a.bin
3b6e60712c2af14e39b775bcc11ecb34c22e7d347d7670678fec9ddb04cdd403		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D1A 16972 bytes

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