MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Numerous embedded URLs point to various domains, many of which are associated with compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and appears to contain metadata rather than user-readable content, reinforcing the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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://wastran.ru/uplcv?utm_term=absolute+of+a+number
- https://leavingcare3plus.ch/userfiles/files/vosotejifix.pdf
- http://ahdongjiu.com/upload_fck/file/2021-4-29/20210429210900459930.pdf
- http://robwalker.net/fckupload/file/6733959294.pdf
- https://arvikabc.com/images/uploadedimages/file/xirisegidava.pdf
- https://fnb-concepts.com/images/uploads/files/devizosibuz.pdf
- https://xanbiente.de/userfiles/file/11969097540.pdf
- https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/730e89fff52d362478f49bdd64df26e7/77320629269.pdf
- https://artbynela.com/uploads/file/35275305650.pdf
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160849d1ea6f97---86993117725.pdf
- http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddf17385193---sawexovepuzolavotefake.pdf
- https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/4196d49cfcc06768ec8b96ae7ee394af/44021415885.pdf
- http://whscardinals1963.com/clients/9/9e/9e5fab02d16e7113a74bdd4e7828f974/File/31090840467.pdf
- https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/0vroh6btgl6fsmqomckppeu1vr/60940500294.pdf
- https://scavilecis.it/userfiles/file/73802290825.pdf
- https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/0c64c2e5966b38a37af29a464c360ed0/98178563855.pdf
- http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a385a1df555---49385052679.pdf
- https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/01aa1dfbc8e751a70664bec90f3c1442/wedolamukovazokawusapez.pdf
- http://kcde.kr/userfiles/file/57467336936.pdf
- https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/vaf9g1o5bpb1502cak4o3tnmg0/48962858466.pdf
- http://erictex.com/ufiles/files/nolora.pdf
- http://lasfyy.com/uploadfile/file/20210704015439794.pdf
- https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/7ed6b42d7d40d66e105b8ccb4aa4254b/42579365459.pdf
- http://zuche0551.com/upload/file/5466001133.pdf
- http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b2092ceb771---29326169176.pdf
- https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/d798fdc8fc291fbbc0b33b17f5862fa5/77116741708.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_off0000da99.bin2c0b705f9e266cf72e9ea80538a873178a5a4afc88d6a2b4478f7fcebbf85305 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA99 | 17212 bytes |
font_01_sfnt_off000107cc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107CC | 16792 bytes |
font_02_sfnt_off00011fe3.bin691ef34b3ff9291011651809d9185f10daaec17db15115b2c30b7502cc3b25be |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FE3 | 10504 bytes |
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