Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5c0acccd2c80f1…

MALICIOUS

PDF

371.3 KB Created: 2015-08-24 00:15:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: dadba15bf91050885fe35aa1fcba3adf SHA-1: dffdc18a279ee219988ceb6b7314f9b11e3ac103 SHA-256: fc5c0acccd2c80f14a3121a400b92a23afd6d1633491335ff0a4e82df8c22f49
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF 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, but the embedded URL is sufficient evidence of a malicious redirection attempt.

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=fayloobmenniknet3385124+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%87%D0%B8%D1%82+%D0%BD%D0%B0+%D0%B0%D0%B2%D0%B0%D1%82%D0%B0%D1%80%D0%B8%D1%8E&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693109_geroinya__svoego__romana_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693597_moe__hodyachee__neschaste_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693250_skachat__knigu__do_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000584c0.bin
583efa8919b5af81bc517e6f517b7134fc9c669414aa1baf371829bb0415adc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x584C0 9988 bytes
font_01_sfnt_off0005a074.bin
a6823cf32ac13f5f9badb6e82c1b8a6f7e350fbd1259a490cc6438d6af96eda0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A074 14716 bytes

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