Malicious PDF — malware analysis report

Static analysis result for SHA-256 b389de99a0d9883b…

MALICIOUS

PDF

36.8 KB Created: 2020-03-21 02:25:17 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 80c91735a4ec981e1cc24e3f14e69b74 SHA-1: 1d74d41749fada70f31e6dc98c451e4fe1fe04d0 SHA-256: b389de99a0d9883b873ffc225af45db75ab0cb60a2c77c4d5c70385e07ed7320
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a large number of external links pointing to various domains, a technique often used for SEO link farming or traffic redirection. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior. The embedded URLs and the document body content suggest a pattern of linking to numerous PDF files, likely to obscure the ultimate destination or to distribute malicious content through a network of seemingly innocuous documents. No scripts were extracted, limiting the analysis of direct payload execution.

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://mrstruitt.com/uploads/1/3/0/9/130969036/130969036.html#mec+600+jr+reloading+slugs
    • http://projecteagleatl.com/uploads/1/3/0/6/130620924/mexokirezopabal.pdf
    • http://arcadesalvacioncarpinteria.com/uploads/1/3/0/2/130272973/luwif.pdf
    • http://nicoletteheather.com/uploads/1/3/1/0/131070539/6334658.pdf
    • http://msjacksonsclass.com/uploads/1/3/0/7/130775321/7859221.pdf
    • http://the-next-half.com/uploads/1/3/0/5/130589449/1f61bb5b6cbd.pdf
    • http://slohappy.org/uploads/1/3/0/5/130544437/1469696.pdf
    • http://www.eclipsemassotherapie.com/uploads/1/3/0/8/130813762/ditevatebisu.pdf
    • http://mta88.qualitynow.net/uploads/1/3/0/7/130738708/maxojeda.pdf
    • http://hotelimpaportugal.com/uploads/1/3/0/8/130813510/2210907.pdf
    • http://laurazimmerman.com/uploads/1/3/0/2/130272355/022139ae69f22.pdf
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066f5.bin
45887014be56ee175e661a92b0f588435891314d96496f24ef0498c74ac5a308		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F5 8140 bytes

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