MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of 'utm_term' parameters indicates an attempt to track user engagement with these lures. ClamAV detection and ML classification confirm the malicious nature of the file, likely serving as a phishing or malware distribution vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 6
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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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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://chcial.ru/uplcv?utm_term=mandukya+upanishad+pdf+download PDF link annotation
- https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/sk2ic1bd7ueccteafnudofkcvq/wizuvabevawuxipomatexefu.pdfIn PDF document text
- https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a35def7fce3---perupefafexosobates.pdfIn PDF document text
- https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/bb8ace97c13b53eaaae2772681b10bc6/24957414047.pdfIn PDF document text
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f34c455f09---33371444409.pdfIn PDF document text
- http://autobedrijvenindex.nl/images/uploads/60552243193.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/16112dbace659a---tegujebozotatajaru.pdfIn PDF document text
- https://erdenet.mn/userfiles/file/13029204280.pdfIn PDF document text
- http://scbczy.cn/up_files/file/20210623_225610.pdfIn PDF document text
- http://julianowka.pl/ckfinder/userfiles/files/gadifu.pdfIn PDF document text
- http://maekalocal.com/Maeka/UserFiles/File/varibapugutijuxozefexixaz.pdfIn PDF document text
- http://moscowfashion.net/content/xuploadimages/file/94455638048.pdfIn PDF document text
- https://tavio.ru/files/file/topetapolenug.pdfIn PDF document text
- http://westmoorclassof1965.com/clients/5/52/52ec68f2b927accf75267cb07bfcc891/File/zilisozezavakuvuk.pdfIn PDF document text
- http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/8f6cce6c7dd8f6adcefa61b08578b05f/bimujozelo.pdfIn PDF document text
- https://arhometutor.com/userfiles/file/32373050399.pdfIn PDF document text
- https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/84faffb746f75fc43e64e0c5f4aa4b05/perirofedafas.pdfIn PDF document text
- http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160724a2d1d310---dinuruxodepururokituvi.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_off0000d66a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD66A | 10648 bytes |
SHA-256: 8cc2fa4f157d82586bb8b42b6c1d8ebcf3efa87d793d582335d86d20533b7a8a |
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font_01_sfnt_off0000eeb5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEB5 | 18348 bytes |
SHA-256: 8772405fa70894abb73132e7ad47a6f6da39d4894a271fec0bda663505ef4728 |
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font_02_sfnt_off00011dbe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DBE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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