MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many of which are algorithmically generated and hosted on disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites or download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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 https://inwebjor.ru/uplcv?utm_term=screencast+with+firestick PDF link annotation
- http://shijijiaming.net/filespath/files/20210910054913.pdfIn PDF document text
- http://cathyourhair.nl/js/ckfinder/userfiles/files/wasidutorumamedi.pdfIn PDF document text
- http://ensky-chemical.com/upload/files/78389700225.pdfIn PDF document text
- https://gullyracing.it/admin/ckfinder/userfiles/files/maremogakosiribetumukipi.pdfIn PDF document text
- https://internationallanguagenavigators.com/media/82158400285.pdfIn PDF document text
- http://mallenmediations.com/mallenmediations/images/userfiles/file/50835559097.pdfIn PDF document text
- https://www.southdownscellars.co.uk/ckfinder/userfiles/files/gaxigatefagifale.pdfIn PDF document text
- http://imdmotors.com/uploadfile/file/2021091220175478.pdfIn PDF document text
- http://goldenteriyaki.com/uploads/files/71416039816.pdfIn PDF document text
- http://socukorglutamatmentesfuszer.hu/ckfinder/userfiles/files/fepivuwojexo.pdfIn PDF document text
- http://studioesflores.pl/obrazy/file/3570201238.pdfIn PDF document text
- http://clinicaveterinariagoitese.it/userfiles/files/35802793295.pdfIn PDF document text
- http://ulleungroadtour.com/FileData/ckfinder/files/20210909_5AC1FC35391A07AD.pdfIn PDF document text
- http://shengyaweb.com/uploadfile/file/2021090407522749.pdfIn PDF document text
- http://studiomistretta.com/userfiles/files/sumosuxor.pdfIn PDF document text
- http://rinsacars.com/files/others/dukezexezib.pdfIn PDF document text
- https://watosaphotography.com/app/webroot/userfiles/files/20210904_140508.pdfIn PDF document text
- https://i-intelli.com/ckfinder/userfiles/files/ruteb.pdfIn PDF document text
- http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143dc0d07d71---79596457249.pdfIn PDF document text
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142392c41971---dawulatokekelezizafamo.pdfIn PDF document text
- http://enslev-anlaegsservice.dk/userfiles/file/rupedileridu.pdfIn PDF document text
- http://www.heatandgas.com/EditorImages/file/20700180056.pdfIn PDF document text
- 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_off0000b94c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB94C | 16844 bytes |
SHA-256: 633d1048b3eb75df38add295916eae284c04bdc43987c0fedd86b71d77d3267d |
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font_01_sfnt_off0000e547.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE547 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fd5e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD5E | 10520 bytes |
SHA-256: b953d30d8d42a17ce59933fa6a5b1576bef8f30650f28c17fa64c0fe86e60e87 |
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