MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting, likely intended to redirect users to phishing pages or download further malware. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this analysis.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
Heuristics 6
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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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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://ketchas.ru/uplcv?utm_term=ks3+maths+3d+shapes+worksheets PDF link annotation
- https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160821f6f654f1---zitupebijapebosagejigo.pdfIn PDF document text
- https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/7f42b8f9be42bcd5797a9e58adfde37c/fabowub.pdfIn PDF document text
- http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a501a38d83a---89099357622.pdfIn PDF document text
- https://alarouba.com/ckfinder/userfiles/files/3187020680.pdfIn PDF document text
- http://es-manzokudou.com/yamituki-n/uploads/files/jufunematese.pdfIn PDF document text
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160adfdd45b6f3---delaketulukofaw.pdfIn PDF document text
- https://lederstuhlshop.de/ckfinder/userfiles/files/lopotadetalarafovuner.pdfIn PDF document text
- http://studioarchperissinotto.eu/userfiles/files/sedetiwunebipetu.pdfIn PDF document text
- https://gyandeepjkss.org/userfiles/file/61324575945.pdfIn PDF document text
- https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609070424fbe4---xirulek.pdfIn PDF document text
- http://ecohort.com/userfiles/files/92374021751.pdfIn PDF document text
- http://www.gonouvellezelande.com/files/13059634425.pdfIn PDF document text
- http://uat2.hkha.com.hk/ckfinder/userfiles/files/50217389557.pdfIn PDF document text
- https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/t864iji9c64ldjjovs91brpm4c/41647228119.pdfIn PDF document text
- http://odesignlab.ru/admin/ckfinder/userfiles/files/fudepizumugawelikabinu.pdfIn PDF document text
- http://bscartridge.com/pic/pasufuv.pdfIn PDF document text
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609f399cb3856---87830370156.pdfIn PDF document text
- http://shqinze.net/admin/upimg/file///xoxepirirofen.pdfIn PDF document text
- https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609941a000316---959983286.pdfIn PDF document text
- http://easytravel63.ru/ckfinder/userfiles/files/judemofuzobumubera.pdfIn PDF document text
- http://bereanbaptistashton.com/clients/1/1c/1ca8668e480cca1e897b6add33210fc6/File/89745539004.pdfIn PDF document text
- http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607aef3dbfc8e---59838241841.pdfIn PDF document text
- https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/979372999ec88f0eb924df4aac6f97ff/75089842975.pdfIn PDF document text
- https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/caefaa8a3d7bddff235efc187ab0cb0f/1180524870.pdfIn PDF document text
- http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/gicsg46j7lipmqa7qf96c4hfa7/bexobidazuledixeti.pdfIn PDF document text
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607635e70a4cd---didawoza.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_off0000c29f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC29F | 16752 bytes |
SHA-256: b3511072200004d021d8bcc810ad104d020258e91b19225a6dc1a44f67476626 |
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font_01_sfnt_off0000eda1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDA1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000105b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105B8 | 10756 bytes |
SHA-256: 1ad689876b7e4d3d2c0c149ae5ae5476894e268eb989e30b48d8659d503acf86 |
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