MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it functions as a link farm. Several extracted URLs point to compromised CMS upload directories, suggesting a distribution mechanism for further malicious content. The PDF structure and embedded links are consistent with phishing or malware delivery tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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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=v+jimin+and+seunghee
- https://chambres-lannion.fr/userfiles/file/3786990566.pdf
- https://korvioinfotech.com/ckfinder/userfiles/files/fuxuvujugume.pdf
- https://roshnaai.com/ckfinder/userfiles/files/79331782565.pdf
- http://abwsalisbury.com/uploads/files/mefudakuti.pdf
- http://intproplaw.com/admin/uploads/file/65541406632.pdf
- https://unaizahic.com/Files/files/45838212259.pdf
- http://platypusspot.org/uploads/ckfinder/userfiles/files/52449357312.pdf
- http://ekorepetycje.eu/Upload/file/bikini.pdf
- http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1613a16999b363---23569662499.pdf
- http://webursitet.org/Files/file/76556892256.pdf
- http://nationalcoopadvisors.com/userfiles/files/zesivamebuzavevawoxob.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16133a44f92e67---93414777643.pdf
- https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/o2h3pthvbqnu2p5g7d71f6ovbc/77856331480.pdf
- http://tuzy.pl/Upload/file/gakupuzavuk.pdf
- http://eastcoastbiker.de/sites/default/files/file/17546551247.pdf
- https://123natura.com/stockages/files/60645402708.pdf
- https://www.mds-horizons.com/upload/files/kalejevevavefavukum.pdf
- https://omnistopbollards.com/application/third_party/ckfinder/userfiles/files/sikokamoge.pdf
- http://advocaatindex.nl/images/uploads/77928748150.pdf
- https://hotnews.md/upload/userfiles/files/89411491412.pdf
- http://vbond.hk/editor_upload/file/99912487615.pdf
- http://gps-tw.com/CKEdit/upload/files/15820676384.pdf
- https://www.ventisilva.com.br/ckfinder/userfiles/files/roriwokidogesebe.pdf
- http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/f4itc62qg2oknrkte963k8746o/terunavutanebamev.pdf
- http://karat-dobremiasto.pl/userfiles/file/sekiditupopina.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_off0000b3a5.bind2266ee3f2f253bd9121f278eb16eb99515fed0058cb6e4f451bb02e2dc9312d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3A5 | 18640 bytes |
font_01_sfnt_off0000e25a.bin4513c811fe8650f9659c7be54ceba99be7f96331f2b343f55def670783a4d18e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE25A | 10532 bytes |
font_02_sfnt_off0000f9ca.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9CA | 16792 bytes |
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