MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 http://yaan121.com/uploads/files/202109040324256211.pdf In PDF document text
- https://ibliberia.com/ckfinder/userfiles/files/29944383361.pdfIn PDF document text
- http://awkontrakt.pl/ckfinder/userfiles/files/55807604651.pdfIn PDF document text
- http://servmed.net/userfiles/file/57154616325.pdfIn PDF document text
- http://abwwilson.com/uploads/files/domapinobifa.pdfIn PDF document text
- http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a29e6ccfa7---venevafonedo.pdfIn PDF document text
- http://fotografiafrancescosomma.com/userfiles/files/sidura.pdfIn PDF document text
- http://ensky-chemical.com/upload/files/xezenogeruzezelup.pdfIn PDF document text
- http://tetraeng.it/userfiles/files/63665475552.pdfIn PDF document text
- http://cityfate.com/files/files/92513820650.pdfIn PDF document text
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140dd3b16b0c---rikutamonufitilij.pdfIn PDF document text
- https://www.confirmedtour.com/files/37991026200.pdfIn PDF document text
- http://kedehg.com/ckfinder/userfiles/files/30190860778.pdfIn PDF document text
- http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1f2ef1769---6386435305.pdfIn PDF document text
- http://babijie.com/upload_fck/file/2021-9-11/20210911234541142397.pdfIn PDF document text
- http://coiffurenais.com/userfiles/file/nobisapogo.pdfIn PDF document text
- http://v-lukomorie.com/uploader/files/53739257540.pdfIn PDF document text
- https://onhimalayas.com/ckfinder/userfiles/files/midutodenavulaz.pdfIn PDF document text
- http://upoart.com/ckfinder/userfiles/files/26678628838.pdfIn PDF document text
- http://perechen-izdaniy.ru/js/ckfinder/userfiles/files/86623200790.pdfIn PDF document text
- https://dansobentre.net/uploads/file/zadixo.pdfIn PDF document text
- https://vjlabor.pitscovn.com/uploads/Upload/files/79322252095.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=private+bookmarks+androidPDF 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_off0000d1ca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1CA | 17548 bytes |
SHA-256: 92aec98b8a7f7c8496c41e0dd9e20da5874c7bcb8a7f749600af41b8b2d26ade |
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font_01_sfnt_off0000ff18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF18 | 10664 bytes |
SHA-256: 4b54b8ae4f3ff0c744148e35b0f117dc4a27d921405ffffda4cb84f0368a260f |
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font_02_sfnt_off00011795.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11795 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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