MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a large number of external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded JavaScript indicates an attempt to execute code within the PDF viewer, likely to facilitate further malicious activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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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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://chcial.ru/uplcv?utm_term=expected+end+of+statement PDF link annotation
- http://dvif.fr/userfiles/file/74156378718.pdfIn PDF document text
- http://sevenseahotel.com/uploads/images/files/3335075670.pdfIn PDF document text
- http://harchovyk.com/userfiles/file/lirizadivodebakipit.pdfIn PDF document text
- http://gardenofsound.com/userfiles/files/dogoxujut.pdfIn PDF document text
- https://terlickodds.cz/www/www/fckphotos/file/96555643504.pdfIn PDF document text
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16155d94067d5b---12747842912.pdfIn PDF document text
- https://australiancaravancentre.com.au/application/third_party/ckfinder/userfiles/files/tadejinaf.pdfIn PDF document text
- https://km2804.com/ckupload/files/58124467730.pdfIn PDF document text
- http://thietbiotoviet.com/Images_upload/files/64468511533.pdfIn PDF document text
- http://paradoxine.com/upload/files/10803377707.pdfIn PDF document text
- http://akifkasaboglu.com/esatfisek/images_upload/files/pevesutulepokememugefo.pdfIn PDF document text
- https://produse-zilan.ro/files/zalexajidirefifunigo.pdfIn PDF document text
- http://tubelessons.net/cms_images/file/339849841.pdfIn PDF document text
- https://lbk-ingatlan.hu/uploads/file/jatenalafevanopokuza.pdfIn PDF document text
- https://cungcapthitdetuoi.com/app/webroot/files/images/pages/files/jedolazon.pdfIn PDF document text
- http://tofuyatogo.com/uploads/files/47972333704.pdfIn PDF document text
- http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16147ef4f47ab0---69141504803.pdfIn PDF document text
- http://www.jacenter.org/js/ckfinder/userfiles/files/labeganebuxodisupibobusiz.pdfIn PDF document text
- http://boxshop.mn/userfiles/files/wakikokopamivow.pdfIn PDF document text
- http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613282912ceff---11010717794.pdfIn PDF document text
- http://varosom.hu/userfiles/files/xekazul.pdfIn PDF document text
- https://sadhankendra.org/erc/media/80119621080.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_off0000af2d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF2D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c744.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC744 | 10628 bytes |
SHA-256: c8f054553a0dd58e9bf43d54be1ff69d9b02313298d21f3b2ab72065018e1d75 |
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font_02_sfnt_off0000df9b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF9B | 14224 bytes |
SHA-256: a2be6eb9e9f8810bd8fb8b5f6a37eefbbdb77adfe2072355eb64050f2dbcbf32 |
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