Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd9e87fdf63ea74a…

MALICIOUS

PDF

360.8 KB Created: 2015-08-26 10:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: cc4e78e2184b1fb89461719b5411f85c SHA-1: d59b0492a5a99c89446672608ed12d226015e98a SHA-256: cd9e87fdf63ea74afb8ba2ac62738d3dc3c4035adc7fea6deada30d9b3b2dd49
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 known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of the malicious URL suggests the document's primary purpose is to redirect the user to a harmful site. The document body was unreadable, preventing further analysis of its content.

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=%D1%81%D1%85%D0%B5%D0%BC%D0%B0+%D1%8D%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE%D0%BF%D1%80%D0%BE%D0%B2%D0%BE%D0%B4%D0%BA%D0%B8+%D0%BB%D0%B0%D0%B4%D0%B0+%D0%BA%D0%B0%D0%BB%D0%B8%D0%BD%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752115_skachat__albom_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751688_flesh__pleer__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751756_skachat__maynkraft__172_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055e74.bin
fa35f0e52e14f3f670d2d590fd77a492b9f3ce5cce5c874b2dc45eff8ea59172		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55E74 8356 bytes
font_01_sfnt_off000576b9.bin
3d3a73596a6160b4384b7efce4a9732f2c2586450f47d74f416b4bf5a58b269e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x576B9 14072 bytes

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