MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites hosting other PDF files. This suggests a link farm designed to redirect users to malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent. No scripts were extracted, but the structure indicates a multi-stage attack leveraging compromised infrastructure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9935
Heuristics 5
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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 https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/dcf705a185aeca28cdcdec2ac5f8ce4a/kofapej.pdf In PDF document text
- https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/53f3610f88d1ed441bc717c00cc1753b/sopemuwowajarupe.pdfIn PDF document text
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087f76248d4d---3081632971.pdfIn PDF document text
- https://infotechb2blite.com/bot/ckfinder/uf/files/bavuvelutitivopujemeba.pdfIn PDF document text
- http://laros.cz/UserFiles/file/xulotupaxubipowebogut.pdfIn PDF document text
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16072234c14a02---deluvevabaxulaw.pdfIn PDF document text
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6bd6525f1---derefowumepogodofetidoja.pdfIn PDF document text
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/40c0ea9e28e3bb8d39bce608c4dbb346/pajuza.pdfIn PDF document text
- https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/a85l5sg8f9uqm4knf1qdf2he60/lufabojitigowuxoxukobotuw.pdfIn PDF document text
- https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608c725607b90---foxuparaxus.pdfIn PDF document text
- http://aiaato.com/FileData/ckfinder/files/20210609_909C0CDCB29EF88B.pdfIn PDF document text
- http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bf476dd0555---47481151609.pdfIn PDF document text
- http://khaskhaan.mn/uploads/userfiles/files/79806964349.pdfIn PDF document text
- https://securityguardsupply.org/php/uploads/file/47966580710.pdfIn PDF document text
- https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/2sp9b0cvo401j9oeoc3elacoh7/2446645811.pdfIn PDF document text
- http://mikailang.net/userfiles/file/20210505064910_363218792.pdfIn PDF document text
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad29a9c187f---8928301786.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/vopagotusabiz.pdfIn PDF document text
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0c5cc9237---19630471880.pdfIn PDF document text
- http://ourjamesfamilyhistory.com/clients/1/14/146a9f92d0a296c7c29e793db058bb30/File/ruvofemifitadixe.pdfIn PDF document text
- https://dakhoathienhoa.net/images/files/73220158691.pdfIn PDF document text
- https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/ea75ba3e4ed8f6f34ec8154cfbf2d48e/bamukefuxa.pdfIn PDF document text
- https://mimpishio2bet.com/contents//files/96865763290.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=expresate+workbook+spanish+1+answersPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00013ee0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13EE0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000156f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x156F2 | 19612 bytes |
SHA-256: 2b51b86bf30eb4f65c1dc715449df2c25d92f734bdd56ba44652d3e87260d49f |
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font_02_sfnt_off00018984.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18984 | 10760 bytes |
SHA-256: 6b70a3d0b329ec8bf8a636a1f7b6452aa535436e3586dc6e0eb18c0c2ebbb1ed |
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