MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also features a large number of external URIs, many pointing to compromised CMS upload directories, suggesting a link farm designed to distribute malware or lead to phishing pages. The ClamAV detection and ML classifier further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9916
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://coretry.ru/uplcv?utm_term=how+many+noughts+does+a+million+have PDF link annotation
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161500ddf9d7b3---rajefisonovujuso.pdfIn PDF document text
- https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16137237cd41bb---16733499557.pdfIn PDF document text
- http://diennuocdanang.com/uploads/image/files/segubor.pdfIn PDF document text
- http://wonderful-foods.net/userfiles/file/7444399266.pdfIn PDF document text
- https://samirkumarpaul.com/ckfinder/userfiles/files/vojakavezovinisisigadidot.pdfIn PDF document text
- http://geofer.eu/userfiles/files/32836533596.pdfIn PDF document text
- https://wemservice.com/ckfinder/userfiles/files/6131813432.pdfIn PDF document text
- http://thingsantiquesla.com/userfiles/files/levulolunapaxofozoku.pdfIn PDF document text
- http://jyotiacademicpress.org/uploads/file/30615864692.pdfIn PDF document text
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16151f13812517---79431337822.pdfIn PDF document text
- http://nextlab-semi.com/files/fckeditor/file/wonolowa.pdfIn PDF document text
- https://locktactyuma.com/ckfinder/userfiles/files/larisuxeku.pdfIn PDF document text
- https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/5461101387.pdfIn PDF document text
- http://www.pataniforum.com/admin/jquery/ckfinder/userfiles/files/37268190467.pdfIn PDF document text
- http://xlith.com/userfiles/files/13268231768.pdfIn PDF document text
- http://www.vikingmaterials.com/img/90800406599.pdfIn PDF document text
- https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d2c0d045e9---23352039244.pdfIn PDF document text
- https://birgatour.mn/js/ckfinder/userfiles/files/vumoxonifonixadipunuwo.pdfIn PDF document text
- https://digitaluzaktanegitim.com/calisma2/files/uploads/99597299758.pdfIn PDF document text
- http://arniuniversity.in/ci/userfiles/files/xarugevamasamuwifuwisupo.pdfIn PDF document text
- https://vietnamairlinescorp.org/js/ckfinder/userfiles/files/13429423101.pdfIn PDF document text
- http://finproekt-msk.ru/userfiles/file/pisulonawurate.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/59707dd77e440af3c625238b159afdee/gebozel.pdfIn PDF document text
- https://lmetinternationalschool.in/ckeditor/ckfinder/userfiles/files/63637632411.pdfIn PDF document text
- https://ajambary.com/userfiles/file/sivoremasefagofivi.pdfIn PDF document text
- http://sportyou.fr/ckfinder/userfiles/files/62927014972.pdfIn PDF document text
- 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_off0000b88a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB88A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d09c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD09C | 14652 bytes |
SHA-256: 21fbe42b377ca1bd72e63223b2bdbb10ea889b6e4b8cc816b8e6022043b940f9 |
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font_02_sfnt_off0000f58d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF58D | 10952 bytes |
SHA-256: 1dae031b65a77c72cf9ee561c25347b31930317e35e83e290228068d31bee226 |
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