MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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://vucert.vn/uploads/files/21524890155.pdf
- http://michaelwilliamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/87910138830.pdf
- https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/8fd271bd52c6d73b67c5fd554f7b3fa1/nileretajuboz.pdf
- http://viorina-deko.com/images/file/setug.pdf
- https://chinatupai.com/web/js/ckfinder/userfiles/files/pekiteti.pdf
- http://elturo.ru/img/upload/files/18025697430.pdf
- https://aldaserwis.pl/ckfinder/userfiles/files/jelofepufep.pdf
- https://sujatasfoodopolis.com/ckfinder/userfiles/files/xokok.pdf
- https://zhbiotech.com/CKEdit/upload/files/96631386043.pdf
- http://attlas.center/userfiles/file/wadosilof.pdf
- https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/9k6nqirsnr4masb331kh1e0hp2/92742961183.pdf
- http://sns-russia.ru/userfiles/file/20543842572.pdf
- https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614646d6718cc---62971706760.pdf
- https://gadesign52.com/uploads/files/202108312216177014.pdf
- http://klenderbio.com/upload/files/44114481004.pdf
- http://dogoducthien.com/uploads/files/perowuzizezurasazin.pdf
- http://johnmarzillier.com/ckfinder/userfiles/files/57992208091.pdf
- https://dynasty888.com/image/files/20210925_080338.pdf
- https://majorsagilekvaros.hu/uploads/file/52152682468.pdf
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614eede964292---jupabo.pdf
- https://restaurant-kamkok.fr/img/Data/file/58807837980.pdf
- https://h1t-url12shio-turbo.com/contents/files/57792542637.pdf
- http://russkiivopros.com/images/FCKeditor/file/52227834358.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=watch+super+bowl+live+free
- 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_off0000af63.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF63 | 16792 bytes |
font_01_sfnt_off0000c775.bin9391178d8b110c05f92ea275d490a6c4f0bf44d4a69b943adde871999fca9455 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC775 | 15024 bytes |
font_02_sfnt_off0000ed2a.bin8e903810f373967a663ea0a736dd64ba5470d72a0293fb4322907bb8e37d6bca |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED2A | 10856 bytes |
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