Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5dbc111c12a5b88…

MALICIOUS

PDF

43.8 KB Created: 2020-03-21 10:59:46 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 006e02dcd6d39fa8103c892dfcc8dd6e SHA-1: a1fb1d777be79b1468b02ea6657ce7904d5290f8 SHA-256: e5dbc111c12a5b8889ce433fdb4d8fa25dae9bf727c976b596ff15fd0c896a5a
92 Risk Score

Malware Insights

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

The PDF file contains a large number of SEO-optimized links to external PDF documents, a technique often used to obscure malicious content or redirect users to phishing sites. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves luring users to potentially harmful websites through these embedded links.

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://atelier-eliom.fr/uploads/1/3/0/6/130621525/130621525.html#what+is+a+safety+data+sheet+%28sds%29+and+when+should+it+be+used+in+the+workplace
    • http://onecorplda.com/uploads/1/3/0/6/130620705/854431.pdf
    • http://lehip.net/uploads/1/3/0/5/130551625/fovalawibukupo_lobotib.pdf
    • http://einstrainingcenter.com/uploads/1/3/0/6/130605510/nimibeze.pdf
    • http://www.cuppingportland.com/uploads/1/3/0/5/130590241/5266320.pdf
    • http://tickproject.com/uploads/1/3/0/3/130323733/996205.pdf
    • http://tesla-energy-lights.org/uploads/1/3/0/7/130775916/d66d0571cfeaff.pdf
    • http://raisemyebenezer.net/uploads/1/3/0/7/130775629/naxunesepilu.pdf
    • http://noticiasinternacionales.net/uploads/1/3/0/7/130775923/zepavakupavude-mekidux-naxomigotoripe.pdf
    • http://singleintheqc.com/uploads/1/3/0/6/130604456/nediduwokokum.pdf
    • http://tiffanyfoster.ca/uploads/1/3/0/4/130477805/ziwaz.pdf
    • http://southbridgewbc.devsite-1.com/uploads/1/3/0/2/130272234/birag.pdf
    • http://hostmaster.kufinternational.com/uploads/1/3/0/4/130436343/67efbb1969c.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_off000081eb.bin
038d3c338f5b058048a475ec7764ebf22d0e8aeb85d4ef46f897a199474639a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81EB 7508 bytes

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