MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and a significant number of external links, many pointing to compromised WordPress sites and disposable domains. These links appear to be part of a link farm designed to redirect users to download malicious files, likely exploiting a client execution vulnerability. The ML classifier strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
Heuristics 6
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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://vico-real-estate.com/ckfinder/userfiles/files/sixudozotiva.pdf
- http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613249e1a3e20---salax.pdf
- https://copacndg.com/images/uploads/files/99143356861.pdf
- http://goldmustang.ru/files/files/muzakesupiseripopidezagax.pdf
- https://cafeau1ait.xyz/js/ckfinder/userfiles/files/gazosukagovugufuvegu.pdf
- https://cargobull.cz/res/file/97714965606.pdf
- http://congluc.com/upload/files/36434351772.pdf
- http://svadbavmoskve.com/content/xuploadimages/file/bavufolemelesukazeduva.pdf
- http://floramarble.com/uploads/17688089769.pdf
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16140f41a7080a---10455119794.pdf
- http://master-br.ru/img/file/bujaferiwugo.pdf
- http://carmakers.cz/userfiles/files/burabedujadiz.pdf
- http://haihengpharm.com/upload/files/66969609510.pdf
- https://podimercrm.com/img/files/jamufufomokad.pdf
- https://monographie.com/ckfinder/userfiles/files/madijapanikagu.pdf
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/qkqr36j6cf51dhs443dcfif3u1/4019089849.pdf
- http://dr-onesrl.com/userfiles/files/tegodejo.pdf
- http://justsayhi365.com/uploads/file/ziminunotijufewi.pdf
- https://emons-verlag.com/testarea/cwsCMSlight/media/files/vofazogapes.pdf
- http://miryangpension.com/FileData/ckfinder/files/20210914_9247A70E43881139.pdf
- http://thuonghieutoancau.vn/uploads/files/posimotutotewawaniw.pdf
- http://laser-piskovani.cz/democms/userfiles/file/xijidawevubefabarus.pdf
- http://paykaaluminiya.ru/ckfinder/userfiles/files/84508389623.pdf
- http://ckattorneys.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gelenobovonez.pdf
- http://serenetour.com/image/upload/File/girewo.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=videoder+beta+app+download
- 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_off0000d4e2.bin9067d97c89cc59b8bf89ecde712c4381d0bc67873b750d9d2cc367c899936890 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4E2 | 10412 bytes |
font_01_sfnt_off0000ec5e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC5E | 16792 bytes |
font_02_sfnt_off00010470.binfc9ea3e078d52ceaba52bb06ad57c74eac91e48d6013dc7bc61c306c2856bf60 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10470 | 18072 bytes |
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