MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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=short+caption+for+black+and+white+pic PDF link annotation
- http://deleeuwputten.nl/site/data/ws/files/rukawafa.pdfIn PDF document text
- http://planet-for-events.de/userfiles/file/zinopexukodefaxo.pdfIn PDF document text
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614590804493b---15789502409.pdfIn PDF document text
- http://alwaysshine.com/fileimage/file/kowaguvilopaluvorozepujas.pdfIn PDF document text
- http://sanitaerprofi.ch/fckeditor/editor/images/file/73445641535.pdfIn PDF document text
- https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/ujfjuq5j401a39alfhq4np4h4s/gemuxisivujapo.pdfIn PDF document text
- http://voyagevietnamlaos.com/hinhanh/file/kafowapanaj.pdfIn PDF document text
- https://akconta.com/uploads/files/rosagox.pdfIn PDF document text
- http://mtkshop.com/images/uploads/file/86493958437.pdfIn PDF document text
- https://greenlandpark.com/uploads/files/65250907267.pdfIn PDF document text
- https://ctcitsupport.com/media/files/82124687581.pdfIn PDF document text
- http://geobigoni.it/userfiles/files/3526031106.pdfIn PDF document text
- http://hong-tour.com/FileData/ckfinder/files/20210930_7282CE4F79F76578.pdfIn PDF document text
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1615f7a256b2bc---sonipokasegivebu.pdfIn PDF document text
- http://hotelniagararimini.eu/userfiles/files/mivagibilejefijizi.pdfIn PDF document text
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/16153a10304ea9---senikuwirabimogisizoviw.pdfIn PDF document text
- https://aynadakikemalizm.com/resimler/files/25986786349.pdfIn PDF document text
- http://hourinkan.net/js/upload/files/82561163188.pdfIn PDF document text
- https://interstudy.net/userfiles/file/dupupupenobeniwu.pdfIn PDF document text
- http://movitecnic.fr/ressource/site-image/files/pagafake.pdfIn PDF document text
- http://maudchristan.nl/ckfinder/userfiles/files/siwonorim.pdfIn PDF document text
- http://mevlanaasm.com/resimler/files/88950183551.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_off0000df30.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF30 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f747.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF747 | 10940 bytes |
SHA-256: 05daee6129aa36706647945d025c4f457ff1efd1bf002221bcb722637dbef7ad |
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font_02_sfnt_off00011068.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11068 | 19540 bytes |
SHA-256: 104e2683902bb5ca85fa0e44ba030393dafc1bff69108307c3dd84791e228f5c |
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