MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF was flagged by multiple heuristics as a link farm pointing to potentially compromised websites, and a machine learning classifier identified it as malicious. The ClamAV detection confirms its malicious nature, specifically identifying it as a phishing trojan. The embedded URLs are likely used to redirect users to phishing or malware distribution sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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=referentes+definicion+pdf
- http://pattarasawat.com/ckfinder/userfiles/files/letefinoratajefopunover.pdf
- http://cpspcb.com/uploads/files/3534841311.pdf
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb67b2ed0a---93143106674.pdf
- http://pwr-tech.ru/userfiles/file/lizivop.pdf
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b647354cf73---tigutefisopopofa.pdf
- http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160758493c264c---xagunasofu.pdf
- https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/n531ibjom9eh12jl2t0i3gqchp/67136263724.pdf
- https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160accd3625c90---ginud.pdf
- https://fotofidelity.cz/userfiles/file/ditemewenenarezekibaxuge.pdf
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/d3hkgfnamnchtcu9med82888q4/baleguxe.pdf
- https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/8e21bdbdd5e75f3778e438efa9fa17e9/34287420391.pdf
- http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab4e9b6bb67---24152437323.pdf
- http://hocikto.info/userfiles/file/sevisonufamulivaruto.pdf
- http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610ed81909dbf---33415008687.pdf
- http://electrogalicia.com/electrogalicia/recursos/archivos/35164048291.pdf
- http://hoteldazegliotorino.com/userfiles/files/9750332944.pdf
- https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/6bi5odqc7qfcoeajn1m84o7711/fatere.pdf
- http://yves-segers.be/userfiles/files/rebud.pdf
- https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/lfeui1gs0nrvmu2bn1phoi53pv/zazuvozaxumawa.pdf
- http://pkynfe.net/userfiles/file/debotusebazorex.pdf
- http://zulassung4you.de/bilder/file/40621746306.pdf
- https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/21276579675.pdf
- https://emauto.lv/index/images/up/file/4952968510.pdf
- https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160869e2ae7662---46865610827.pdf
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5ae03bd18---83001941535.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_off0000da41.bin12b039b23f183a6985ad9c1e8392ffd846e21cc76cbe6a4f1a6dba2a2c1aaa7d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA41 | 18392 bytes |
font_01_sfnt_off00010932.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10932 | 16792 bytes |
font_02_sfnt_off00012149.binec3c76e4f1672084fd7dc6382d87406f7138ae03ff1197d2b0686f301041b5d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12149 | 10452 bytes |
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