MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and links to compromised WordPress upload storage, suggesting it functions as a link farm designed to redirect users to potentially harmful websites. The presence of multiple compromised or disposable hosting links reinforces the phishing or malware distribution vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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 https://ketchas.ru/uplcv?utm_term=inclined+to+say
- https://muguet.fr/sites/default/files/file/nirogikeloloniravimoku.pdf
- http://dragonera.cn/admin/userfiles/file/72496732050.pdf
- http://cga82.com/admin/File/robuvimul.pdf
- http://dgjinhak.kr/DATA/upload/files/202106081204358512.pdf
- http://tamker.hu/userfiles/file/jewopexoviwobaxez.pdf
- http://giaoducvietnamtv.com/images/ckeditor/files/vadirujokado.pdf
- http://historia-bfured.hu/userfiles/file/zujaratojewudelaretaxani.pdf
- https://hosvagyok.hu/userfiles/file/83721839428.pdf
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160948b3962854---98037782943.pdf
- https://booknowrentalimo.ch/userfiles/files/22246830377.pdf
- http://taiwanglassgroup.cn/userfiles/file/nuzugiwuwejizirig.pdf
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f76cea0e7c458a6668c2fbd56e809bba/welexagipulilopowu.pdf
- https://belhasasecurity.com/userfiles/file/83030945815.pdf
- http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/baxuxepexikujawunu.pdf
- http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/78p8he48du6qp18v592plae5ss/11644778007.pdf
- http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1608296e2db204---80541937429.pdf
- http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607250d135145---92944600911.pdf
- http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/16079626d8cd2e---xofizanepegogeforosopusus.pdf
- http://boathousebrokerage.com/userfiles/file/vuvafa.pdf
- https://cbdc.co/uploads/ckfinder/userfiles/files/mumidazeju.pdf
- https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/0b1092cdba0cda1872dbd913f2d1cc69/bizukijotokewas.pdf
- https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c301f0c68e1---basimusalukedonabobeja.pdf
- https://zahnersatz.pl/userfiles/files/36845455414.pdf
- https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/4e06b2df336db11259e0ec0ce7555232/39432285540.pdf
- 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_off0000fada.bine187594f246ddde50722588f255798219623bb3a10d42fb4faf50fdb5d8bb907 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFADA | 17080 bytes |
font_01_sfnt_off00012792.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12792 | 16792 bytes |
font_02_sfnt_off00013fa9.binda0a4406ced8b693165fccdae50607575942aa7cba70349bf98e3102f4010585 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13FA9 | 10328 bytes |
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