MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file is a PDF that contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories. Heuristics indicate this is a link farm designed to direct users to external malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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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 http://hkxhjfc.ltd/uploads/files/20210908044722.pdf In PDF document text
- http://land89.com/ckupload/files/xedilodusixola.pdfIn PDF document text
- http://madmojo.com/fckupload/file/rukidarigokejelox.pdfIn PDF document text
- http://twfindia.in/userfiles/files/kubenirekumalinoxevorezi.pdfIn PDF document text
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/161396ab347a01---74934932770.pdfIn PDF document text
- https://happy-playground.gr/uploads/_uploads/files/rifofutosuwowafox.pdfIn PDF document text
- http://thepokeluau.com/uploads/files/52046003470.pdfIn PDF document text
- http://sculecuacumulator.ro/app/webroot/files/userfiles/files/11001358981.pdfIn PDF document text
- https://mackbeks.com/files/file/6211569967.pdfIn PDF document text
- https://koparieshorvathbusz.hu/files/file/banozaxig.pdfIn PDF document text
- https://charterboatdeliverance.com/uploads/files/69034201167.pdfIn PDF document text
- https://eklyps.net/images/file/70022614962.pdfIn PDF document text
- http://marktoby.com/akram/know_news/admin/userfiles/file/24156834912.pdfIn PDF document text
- https://dildendilecevirievi.com/upload/ckfinder/files/69574092381.pdfIn PDF document text
- http://gryfarmerskie.pl/pliki_wyswig/files/28776488060.pdfIn PDF document text
- http://sictombbi.fr/ckfinder/userfiles/files/palomazilufugomufogin.pdfIn PDF document text
- https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/vtnvgp5n6gfk7870rcqh7i0i15/7972359359.pdfIn PDF document text
- http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/16131692e4bc1b---roped.pdfIn PDF document text
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/161346d51d6dfb---pugoki.pdfIn PDF document text
- https://xeroxexpres.cz/userfiles/file/76589190531.pdfIn PDF document text
- http://alacartedesign.de/userfiles/file/95476783610.pdfIn PDF document text
- http://antoniolescio.net/userfiles/files/28533337658.pdfIn PDF document text
- http://gzmingjun.com/uploadfile/files/20210909_083255.pdfIn PDF document text
- https://art-gallery.mn/uploads/files/zeduv.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=ela+worksheets+pdfPDF link annotation
- http://zs.tom.ru/jsplugins/ckfinder/userfiles/files/begujifupubu.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_off0000dc04.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC04 | 10560 bytes |
SHA-256: ad5e2a2657dd75a13c1eed63ce8b565db62af943c9bd857ce2df9534c7464ce3 |
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font_01_sfnt_off0000f454.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF454 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010c66.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C66 | 17292 bytes |
SHA-256: 33c9d545ac0b66f2278e49196e59522228a6d227ff083b289b0eb2303e3ac28b |
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