Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f0c9ce5f98674dd…

MALICIOUS

PDF

31.5 KB Created: 2020-04-22 19:37:31 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 06f341dbfad08b6938c838bf0d02c983 SHA-1: f071eb49821b65482a9fd7c7e0f41716b8c64b85 SHA-256: 7f0c9ce5f98674dda44fa25325153d9b9cfe69fee7a9769a9f7efad23968c3d1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The heuristic PDF_SEO_LINK_FARM specifically indicates a mass external PDF link farm, suggesting a coordinated effort to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, limiting the analysis of direct payload execution.

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://pragueprivatetransfers.com/uploads/1/3/0/5/130544321/130544321.html#indicator+bhojpuri+song++mr+jatt
    • http://thehandsomegeek.com/uploads/1/3/0/6/130622084/34db68757178e.pdf
    • http://fluxprollc.com/uploads/1/3/0/5/130590076/tunepusunaf.pdf
    • http://techknowledgeu.com/uploads/1/3/0/3/130313044/5114792.pdf
    • http://hayesrobertson.net/uploads/1/3/0/6/130622038/lusomexepis.pdf
    • http://piettegael-masseur-kinesitherapeute.fr/uploads/1/3/0/7/130775688/xarukomimido.pdf
    • http://booklists.co/uploads/1/3/1/3/131398582/568988.pdf
    • http://tylanwebco.com/uploads/1/3/1/4/131483279/sumaxopijinigesofu.pdf
    • http://kingaperjes.com/uploads/1/3/1/4/131407283/9f8ebe375.pdf
    • http://dogtaggedthemovie.com/uploads/1/3/0/7/130740217/3358914.pdf
    • http://libertyalabama.com/uploads/1/3/0/6/130605030/zetaxu_geboresebu_titofezetaxese_pifeg.pdf
    • http://ener-pacte.fr/uploads/1/3/0/5/130588445/cf54d8b80d5f.pdf
    • http://keswickpoint.com/uploads/1/3/0/8/130813413/kurulavipilud_pimunagivejak_dixuxav.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_off000051be.bin
92f89dc131144edb528d1d7c2e2cdb1620ad9c641fd9ce4afefa1e356e7f3ba6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51BE 8284 bytes

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