Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d01415c90643fcc…

MALICIOUS

PDF

43.7 KB Created: 2020-06-20 03:43:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90d3721e157ec6af5326e674f5df9cb7 SHA-1: 7610fc8327a984f8d29d97997833c9a2496fe095 SHA-256: 3d01415c90643fcc01a9768e1847e5d4942211528f214429e40c591d759062e2
62 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links, many of which point to other PDF files hosted on similar domains. This pattern is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The primary heuristic identified a 'PDF_SEO_LINK_FARM' with multiple links to numeric-slugged PDFs, suggesting a coordinated effort to create a network of sites. While no scripts were extracted, the embedded URLs themselves are the primary indicators of malicious intent.

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://thequeenoftarts.org/uploads/1/3/1/3/131382126/131382126.html#english+language+lessons+for+adults
    • http://getkidsoffsugar.com/uploads/1/3/1/6/131606330/fadebogidabarobelati.pdf
    • http://rivage.services/uploads/1/3/1/4/131406433/7074535.pdf
    • http://iglesiasolojesusesdios.org/uploads/1/3/1/4/131452825/733878.pdf
    • http://oxhillreds.com/uploads/1/3/0/9/130969300/515372.pdf
    • http://dreamersandleaders.com/uploads/1/3/2/3/132302830/9008919.pdf
    • http://eq3aruba.com/uploads/1/3/1/1/131163774/zelenepisewew.pdf
    • http://guaguitas.com/uploads/1/3/0/2/130271076/xotowozot_dokixikunu.pdf
    • http://lartenfete.com/uploads/1/3/1/1/131164048/9739622.pdf
    • http://feedyoursoulretreats.com/uploads/1/3/0/8/130874617/furag.pdf
    • http://dreamersandleaders.com/uploads/1/3/2/3/132302830/900891
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e85.bin
45801c949e87f2cdb268b581e2f8b9b0ac87ce7539d959b1f5e975a0d0024b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E85 5008 bytes
font_01_sfnt_off00007f7e.bin
71174ba390b53ee0ac7dffa6954f159f9d5ebb838a7fb23e2d99db58396f6c08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7E 10200 bytes

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