PDF malware analysis — malicious · 0594b19a20e88672

MALICIOUS

PDF

39.2 KB Created: 2020-06-03 06:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9100f71a77417ac9864e532c44f727fc SHA-1: d170a319fac0312ba9b37028a7340580165974b4 SHA-256: 0594b19a20e886722a4492c867658528cd84de8796d81ed8bb6428f7b390a896

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded URLs, many of which point to suspicious domains structured as link farms. The heuristic 'PDF_SEO_LINK_FARM' indicates a high volume of external links, suggesting an attempt to manipulate search engine results or redirect users to malicious content. The presence of the 'ML_NYX_PDF_MALICIOUS' flag further supports the malicious classification. No scripts were extracted, but the document body contains obfuscated text and URLs, indicating a likely SEO spam or phishing lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

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
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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://9lggiv.bdgct.com/uploads/1/3/0/2/130272606/130272606.html#artigos+de+jornalismo+de+investiga%25C3%25A7%25C3%25A3
- http://organichairandskin.com.au/uploads/1/3/0/8/130874240/durob.pdf
- http://vermontbatcenter.com/uploads/1/3/0/6/130621301/1172317.pdf
- http://ryanbokehphotography.com/uploads/1/3/0/7/130775719/fofepofoforelonuvon.pdf
- http://harrisoncountyfrn.org/uploads/1/3/0/3/130379126/pukoliwipew.pdf
- http://jackhammermotorcycles.com/uploads/1/3/0/3/130379362/6696298.pdf
- http://myblessedart.com/uploads/1/3/1/4/131409236/losokivi.pdf
- http://chelseacarrickcontent.com/uploads/1/3/0/6/130621464/be46937cde.pdf
- http://9lggiv.bdgct.com/uploads/1/3/0/2/130272606/terms.html
- http://9lggiv.bdgct.com/uploads/1/3/0/2/130272606/dmca.html
- http://9lggiv.bdgct.com/uploads/1/3/0/2/130272606/policy.html
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://fupalowonega.files.wordpress.com/2020/05/85732054988.pdf
- https://porugisi.files.wordpress.com/2020/05/dapisenuvajofagobelufesas.pdf
- https://wimaped597797669.files.wordpress.com/2020/05/77664388850.pdf
- https://pudofebevo.files.wordpress.com/2020/06/konubazidoxajigiladafe.pdf
- https://buwixega.files.wordpress.com/2020/05/dobumezajulepigo.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/
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000697e.bin` `283c086f8ab610d8290b9d9c49ffd8037e1c072060ad867b519d734909fdd68b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x697E	12468 bytes

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