MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, indicating a malicious intent to redirect the user. Heuristics indicate this is a link farm and a callback phishing lure, suggesting the document is designed to trick users into calling a fraudulent number. The ML classifier and ClamAV detection strongly support the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://lncxjzxxw.com/upload_fck/file/2021-9-9/20210909041956212208.pdf In PDF document text
- http://degrossier.nl/uploads/file/wakukozizukezapu.pdfIn PDF document text
- http://esejsc.com/upload/files/getikepakolozejofe.pdfIn PDF document text
- https://taksis.lv/taksis/userfiles/file/rixalenopek.pdfIn PDF document text
- https://dp-engineers.com/admin/userfiles/file/sagejefofafotokobe.pdfIn PDF document text
- http://sergeisurzhin.ru/ckfinder/userfiles/files/7197857850.pdfIn PDF document text
- https://makojudo.pl/zdjecia/fck/file/18075732916.pdfIn PDF document text
- http://coytex.net/ckfinder/userfiles/files/25418163844.pdfIn PDF document text
- http://theprofitnesstrainers.com/userfiles/file/46715318735.pdfIn PDF document text
- http://etasystem.net/userfiles/files/fasoximutotugoresarur.pdfIn PDF document text
- https://sassanoproperties.com/FCKeditor/file/nudaxamutopofadu.pdfIn PDF document text
- http://colegiosantarosa.com/uploads/imagem/file/modirodumipevaleme.pdfIn PDF document text
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/rocdufp4fhv51kijnal1t682f3/vedasor.pdfIn PDF document text
- http://www.mariabeckmann.com/fotos/uploads/files/38143820932.pdfIn PDF document text
- http://kamennykoberec.eu/editor_uploads/system/files/gegilezurex.pdfIn PDF document text
- http://lienming-rubber.com/uploads/files/202109130521129652.pdfIn PDF document text
- http://usefchina.com/uploadfile/file///2021090422172645.pdfIn PDF document text
- https://khotelmarket.com/FileData/ckfinder/files/20210909_404C5BBC0A6874D4.pdfIn PDF document text
- http://sp2wronki.pl/fotki/fotki/file/dajuledupegabovuto.pdfIn PDF document text
- http://vektorma.ru/uploads/assets/file/pibofitovum.pdfIn PDF document text
- http://aviapartner.biz/js/ckfinder/userfiles/files/25599306129.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=the+kissing+booth+2+full+movie+free+online+watchPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ec81.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC81 | 11348 bytes |
SHA-256: 2d4a9b3018473cd10ab8bd739b989308a3443ec90ff65f68b35e81a9fe7653da |
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font_01_sfnt_off00010734.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10734 | 18192 bytes |
SHA-256: 35c9d41378d096ff32ea3f9e8ce4ca911a730d8cfd598fe94519fcc332e6c961 |
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font_02_sfnt_off00013688.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13688 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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