MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also contains numerous external links, many pointing to potentially compromised or disposable domains, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 http://hzqzg.com/d/files/16829814572.pdf
- https://chatsystem.site/js/ckfinder/userfiles/files/vagenupalog.pdf
- http://westfield.qa/multimedia/userfiles/file/romizabugefifuw.pdf
- http://gernano.eu/gfx/userfiles/files/83127239125.pdf
- http://tdbakademi.org/userfiles/files/52655131722.pdf
- http://kipia-nn.ru/userfiles/file/27747578166.pdf
- http://www.gonouvellezelande.com/files/lokewifokapaliravar.pdf
- http://jongauger.com/userfiles/file/8604975055.pdf
- http://dulichtantai.com/files/uploaded/files/vuzavifadufuleveni.pdf
- http://ipceurope.com/assets/file/76781266604.pdf
- http://tulga.ru/editor/files/55197485856.pdf
- http://www.lnk-creation.fr/upload/file/zavaranoj.pdf
- http://2015.letnifestiwal.pl/ckfinder/userfiles/files/wupoduzu.pdf
- https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/4ed3043cfcca987a914db843883ec03f/24951952420.pdf
- https://unique-u.biz/images/uploads/file/didemenoz.pdf
- http://montoaneli.com/ckfinder/files/18722861842.pdf
- https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/lepaaq9bobs8ssa6gccols0e05/53262363677.pdf
- https://accuratesearch.com/userfiles/file/xudupibigeketew.pdf
- https://shastriratanchatterjee.com/ckfinder/userfiles/files/77559571529.pdf
- http://moretonassets.net/userfiles/26655360461.pdf
- http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139484f8564f---52389048045.pdf
- http://arcos-eff.it/userfiles/files/lifimit.pdf
- http://sgyscom.com/upload_fck/file/2021-9-3/20210903010916102596.pdf
- http://pneusmarene.it/images/file/99671200890.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=after+the+wind+lou+kasischke+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_off0000b270.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB270 | 16792 bytes |
font_01_sfnt_off0000ca87.bin992b649ef1d1e17574e663b461aeac01bea8e04ea279d355b5ed461482d3f4cf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA87 | 10976 bytes |
font_02_sfnt_off0000e40a.bin9588e2b2735abffb0e656b912495fa0059966ec83859e7b983e7dc9f7217b105 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE40A | 16068 bytes |
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