MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or are part of a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://cructi.ru/uplcv?utm_term=4x4+hill+climb+game PDF link annotation
- https://jphotographyllc.com/userfiles/file/walifomizad.pdfIn PDF document text
- http://liga-stf.ru/i/upload/files/pajisom.pdfIn PDF document text
- http://basketaci.cz/UserFiles/File/xavafajumukiluzavetu.pdfIn PDF document text
- https://toananhmedical.com/uploads/files/foxex.pdfIn PDF document text
- https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/3289c3db26a70ddb56ce6197ce6452d3/rofuvudif.pdfIn PDF document text
- http://gyarmatilovastorna.hu/userfiles/file/85206268229.pdfIn PDF document text
- https://hoatuoi360.vn/uploads/files/20746439660.pdfIn PDF document text
- http://hidropro.hu/upload/fokonabezifogekarofa.pdfIn PDF document text
- http://serextion2006.com/js/upload/files/dezirivopadosaxodut.pdfIn PDF document text
- http://hai-bi.com/uploads/files/202109060013213414.pdfIn PDF document text
- https://daqing-jewelry.com/uploads/files/202109022322025839.pdfIn PDF document text
- http://eikenhorstgroep.nl/userfiles/file/24004323769.pdfIn PDF document text
- https://mgogs.com/mgfiles/file/wazotugisapifumakuruki.pdfIn PDF document text
- http://lex.tj/img/file/gixosorumepuxizuxeze.pdfIn PDF document text
- http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1613356b6d811d---21170583174.pdfIn PDF document text
- http://papianiarch.it/userfiles/files/32571267284.pdfIn PDF document text
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613608eeda58e---60629525945.pdfIn PDF document text
- https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/16137df65a4baa---61533463884.pdfIn PDF document text
- https://tigapilar.com/upload/files/nadebapiloxa.pdfIn PDF document text
- https://pastijptoto.com/contents/files/lumesawunajov.pdfIn PDF document text
- https://www.pepinieres-gey.fr/ckfinder/userfiles/files/sigix.pdfIn PDF document text
- http://trineckevzdelavani.cz/webpagebuilder/ckfinder/userfiles/files/gilagumimagateve.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_off0000b69e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB69E | 10308 bytes |
SHA-256: 3e22532e8b269354cd7e05a6aee6d252ec662ad29062080880d69961a775ef14 |
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font_01_sfnt_off0000cdd7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDD7 | 16552 bytes |
SHA-256: a76b03544d8ed82197388f2dc53d1ce6d3429a979a089a2f78c96085d182810f |
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font_02_sfnt_off0000f87b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF87B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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