Malicious PDF — malware analysis report

Static analysis result for SHA-256 adb0330a43f8455e…

MALICIOUS

PDF

353.3 KB Created: 2015-08-28 17:59:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9f8947e77a822214f0da7b850a364e34 SHA-1: 9e8a218c2b80ff3f4001dae785ac0823ba466f75 SHA-256: adb0330a43f8455e8571ac91f3c44e6fa98f2523b99c56d790186a86fc7cf5bc
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 linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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%A1%D0%B0%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9+%D0%B3%D1%83%D1%81%D0%B5%D0%BD%D0%B8%D1%87%D0%BD%D1%8B%D0%B9+%D0%BA%D0%B0%D0%BA+%D1%81%D0%B4%D0%B5%D0%BB%D0%B0%D0%BD%D0%BE+%D0%B8%D0%B7+%D0%B2%D0%B0%D0%B7&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809563_irina__hakamada__knigi_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809559_skachat__videopleer_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809354_skachat__igruy__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054170.bin
eb3c8688ba72fc1fa5e9c44ce4ed8228548b608f082b78edd1798e04c68e745c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54170 8144 bytes
font_01_sfnt_off000558d7.bin
6f6e3d02e66d05a60d65b5560c0580634824d852b8bd6a48c6d3f165f52ec209		 pdf-font-stream PDF embedded font (sfnt) at offset 0x558D7 14104 bytes

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