MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating embedded JavaScript and a link farm structure. The PDF contains numerous external URIs pointing to disposable domains, suggesting a phishing or malware distribution attempt. The embedded JavaScript stream is a common technique for exploiting PDF vulnerabilities or redirecting users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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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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://coretry.ru/uplcv?utm_term=regular+show+adult+jokes PDF link annotation
- http://thunderstar.cn/userfiles/file/20210904143125806914667.pdfIn PDF document text
- http://unicorn-furnitures.com/d/files/97239689370.pdfIn PDF document text
- http://www.otevrenysklep.cz/ckfinder/userfiles/files/rozuv.pdfIn PDF document text
- http://eaas-journal.org/survey/userfiles/files/tisudedepujatevadem.pdfIn PDF document text
- https://qeyeoptical.com/ckeditor/ckfinder/userfiles/files/96754157163.pdfIn PDF document text
- http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140c35c7477c---81071103779.pdfIn PDF document text
- http://strojsteel.cz/webpagebuilder/ckfinder/userfiles/files/gujerasojusaka.pdfIn PDF document text
- https://bloomlight.pl/_bloom/file/nekigewiferomonefoxedapaj.pdfIn PDF document text
- http://evpltravel.com/xv_image/file/gakevaxupusorug.pdfIn PDF document text
- http://stlukesfp.org/ckfinder/userfiles/files/9359738351.pdfIn PDF document text
- http://recepti.plovdivweek.com/js/ckfinder/userfiles/files/sebubobupibavemuv.pdfIn PDF document text
- http://turbotechnik24.de/userfiles/file/bexoridolapefasenoge.pdfIn PDF document text
- https://bharatiyabhashaparishad.org/ckfinder/userfiles/files/5866734025.pdfIn PDF document text
- https://adian.eus/files/galeria/files/58426488854.pdfIn PDF document text
- http://merklink.nl/site/data/ws/files/69569298250.pdfIn PDF document text
- http://cana.vn/uploads/userfiles/file/zebunuzapiwabaso.pdfIn PDF document text
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8a6e217f560e4c76104d56e5f76b9c45/6664727692.pdfIn PDF document text
- http://spain-ex.com/images/blog/file/29333413072.pdfIn PDF document text
- http://thankschicken.com/uploads/files/59270073618.pdfIn PDF document text
- http://aarogyamedico.com/userfiles/file/riluzigizavesovofozovozer.pdfIn PDF document text
- http://aallergy.friend-match.com/upload/files/51410308225.pdfIn PDF document text
- https://appchecar.com/ckfinder/userfiles/files/19922673816.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_off0000e993.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE993 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000101aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101AA | 10784 bytes |
SHA-256: a2ee4da17c766837b58d66f958b091ed16f8395c1413b006da213ed433168c06 |
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font_02_sfnt_off00011a94.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A94 | 17092 bytes |
SHA-256: 5a12cf5afa16881220df6ab3f9874dc179ea65189b5ea08b00ffd9a4e737b002 |
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