Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9f29b71cbab45ae…

MALICIOUS

PDF

52.3 KB Created: 2020-06-07 09:19:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a53c843e78c8dd43aa92a0b3fece389f SHA-1: 0ee89ac1031b5974a3b15fba9844d0ad68e582db SHA-256: a9f29b71cbab45aeaf7652f713cf46de03d2a777e141913f595c5f5f5666ee4e
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO manipulation or to host malicious content. The ML classifier strongly flagged this PDF as malicious. The document body contains metadata about its creation, but no direct user-facing text that would indicate a specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://autodiscover.showuplifestyle.com/uploads/1/3/0/5/130551684/130551684.html#la+hi%25C3%25A9rarchie+des+normes+est+elle+v%25C3%25A9rifi%25C3%25A9e
    • http://webmail.auntiea.com/uploads/1/3/0/4/130489131/zoputinakili-gapitaf.pdf
    • http://vegashomesbyvictoria.net/uploads/1/3/0/6/130639514/40db5bd69c33e.pdf
    • http://mta-sts.mx.bellsoftherockies.org/uploads/1/3/1/0/131069886/9449864.pdf
    • http://gbartonart.com/uploads/1/3/1/4/131453278/benexe.pdf
    • http://shamraeffengineering.com/uploads/1/3/1/8/131856533/lijagagebevamut.pdf
    • http://6thsense.lv/uploads/1/3/0/6/130621695/xowulewiwijeda-pafisolodiva-xutupizun-xenov.pdf
    • http://2ub.undesirable.us/uploads/1/3/0/5/130540420/vulariwizizinejo.pdf
    • http://avamoher.com/uploads/1/3/0/6/130621603/8564577.pdf
    • http://pond.contractor.hoaglandscape.com/uploads/1/3/1/3/131379801/3699216.pdf
    • https://favefeg.files.wordpress.com/2020/06/zawatogufixetiluretiged.pdf
    • https://febavimoju.files.wordpress.com/2020/06/87212406003.pdf
    • https://jigatize.files.wordpress.com/2020/06/norolibuvutarelerokom.pdf
    • https://vudilofifo.files.wordpress.com/2020/06/7140524930.pdf
    • https://wonafuburos.files.wordpress.com/2020/06/5578287744.pdf
    • https://gokanar973352218.files.wordpress.com/2020/06/91363691734.pdf
    • https://lidonilogut.files.wordpress.com/2020/06/97195042380.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_off00009836.bin
d306b828c013f806b5d8a9916de86d86232c54712c86a9f1f77049bc1c7c2fa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9836 14124 bytes

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