MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites, likely serving as a distribution point for phishing or malware. The presence of external URI heuristics and link farm detection further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9988
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=acuerdos+de+paz+en+guatemala+pdf+completo
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0215741421---pukelatawasepe.pdf
- http://onlineticketreview.com/images/file/pogewixo.pdf
- http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac955e90a3---putoxubudo.pdf
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080db915b6ae---53748835780.pdf
- https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/0a43a07f7da557c082ad5ef510eb0650/60454946018.pdf
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ed92b3cc6---17945483618.pdf
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607208bed3869---83560232354.pdf
- http://suacuacuonthanhhoa.com/upload/files/mirunufad.pdf
- http://kgmda.com/upload/files/7445774238.pdf
- https://toliveinchristjesus.ceosale.catholic.edu.au/application/third_party/ckfinder/userfiles/files/pugedobisegosugep.pdf
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075d283748bf---sijifurawegixasulitera.pdf
- http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160772341ef11b---zokasipogokutotefedetox.pdf
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/896017420694dc417961fd723df50ccb/70178437669.pdf
- https://tempegaring.com/contents//files/ratefiwob.pdf
- http://lamekatus.com/uploads/ckeditor/files/negasutipexusa.pdf
- https://ckmusicdesign.nl/userfiles/file/61606153963.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0fa05349c---6198984994.pdf
- http://museodegliarazzimarsala.com/userfiles/files/21886658988.pdf
- https://sentinels.ro/userfiles/file/tusokivijeka.pdf
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160c627e00da5a---18272555476.pdf
- https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/fd81dfe759dcdc52690897583bbbddae/59516105938.pdf
- https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/6d2870fc9a3ffa936b46ac9cf0c6ac62/53701965543.pdf
- https://tiklatakip.com/calisma2/files/uploads/94461168303.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://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000169c4.bin07ef5b97ff326959a084c882f912c71d0be8952a728ae653c3b8b2287014689f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x169C4 | 11012 bytes |
font_01_sfnt_off00018342.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18342 | 16792 bytes |
font_02_sfnt_off00019b54.binf80e76276d31c3f0566140d7015a51dbd7e866256a9154ddce58b6d1b4ad40c9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19B54 | 18732 bytes |
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