MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external links, including links to compromised WordPress upload storage, suggesting it is part of a link farm or phishing campaign. The presence of a 'download button' heuristic further supports a lure-based attack pattern. While no scripts were explicitly extracted, the nature of the heuristics and the detection names point towards a malicious PDF designed to trick users into downloading further stages or visiting malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://fibra-optica.ro/ckfinder/userfiles/files/2763374566.pdf In PDF document text
- http://st-communications.com/ckfinder/userfiles/files/wuwokuxazetedubaz.pdfIn PDF document text
- https://istocdukkan.com/userfiles/files/gurojebifeluwufasepimijo.pdfIn PDF document text
- http://inwallendorf.de/userfiles/file/lamujurufewagog.pdfIn PDF document text
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bce2511e51b---27279395850.pdfIn PDF document text
- https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/1db8b1d164c660b883d57ff7f94cda1d/rojukisatikixapomowozodi.pdfIn PDF document text
- http://bkdesign.ee/userfiles/file/molikowagaxanonoge.pdfIn PDF document text
- https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/1cb7ee7eb47b784890e825107e4c3f98/rozafajerasaned.pdfIn PDF document text
- https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/t0vq0kijnluc7s5pl3g8bakbj0/pipidedobadamazutofawuzam.pdfIn PDF document text
- http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ee4acc9ca---fuvizeluwekanox.pdfIn PDF document text
- http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b2a91e0f7---gokuxebopeponasux.pdfIn PDF document text
- https://bazab.ru/ckfinder/userfiles/files/toxavukig.pdfIn PDF document text
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076106c002c7---17675300521.pdfIn PDF document text
- http://cuatro-pr.org/sites/default/files/file/fasabenesowidomoparujip.pdfIn PDF document text
- http://randalljroutson.com/clients/44711/File/28878876335.pdfIn PDF document text
- https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/hcua339jfkomvqpsssparcnqvr/31780225338.pdfIn PDF document text
- https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/c9ac030b9d896e1afc967c594f249f2a/64846150461.pdfIn PDF document text
- http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160718943a408d---31469214298.pdfIn PDF document text
- http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609f81ca433d8---32866625889.pdfIn PDF document text
- http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16072c73e210b8---64274971657.pdfIn PDF document text
- http://taxicityplus.ru/userfiles/file/87984745169.pdfIn PDF document text
- https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/c8ff676d86808ebc2899490320280edd/ruwerugux.pdfIn PDF document text
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/43b1f229d5cdb25cd089aa8b6569e336/felokurasewa.pdfIn PDF document text
- https://amatnieks.lv/pictures/image/56380064348.pdfIn PDF document text
- http://sbox-technology.com/upload/datoteke/37492741012.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=idioms+and+phrases+questions+for+bank+examsPDF 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_off0001009d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1009D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000118af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118AF | 17144 bytes |
SHA-256: 617554f0fd5561f16888b2a02ef259b3f5e54047ea35d39c008603ebbc1a2b72 |
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font_02_sfnt_off0001452d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1452D | 11248 bytes |
SHA-256: b7673b4706e8c36ca6f48bbcbb2872dfdb4f5158a52041171d471801f89cf946 |
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