MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS platforms. The presence of 'utm_term' parameters suggests a phishing or SEO manipulation tactic to track user engagement with malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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=emulsion+polymerization+and+emulsion+polymers+pdf PDF link annotation
- http://kaupa.cz/userfiles/file/8274507209.pdfIn PDF document text
- http://stjconsulting.it/userfiles/files/59990503159.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161283ac1d39a6---9599050013.pdfIn PDF document text
- https://lescourailleurs.com/upload/editor/file/lolemeb.pdfIn PDF document text
- http://masonfamilyreunion.org/clients/b/bd/bdaf0a3c19eb5f10f0519c747c117e37/File/zenigakumilozilurudexu.pdfIn PDF document text
- https://foundryindia.org/userfiles/file/76546334187.pdfIn PDF document text
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a41029bc559---posaviwutusonizin.pdfIn PDF document text
- http://minhanh.com/files/ginirataperobusovezebage.pdfIn PDF document text
- http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/ff9d203cfdab38c26568e2dd5e2ea8e0/golatopogugijuzogixa.pdfIn PDF document text
- https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/c0745fdeb62a9a80ef7abcf2eaa78ef9/16242470671.pdfIn PDF document text
- https://smartcirclegroup.com/userfiles/file/padobepituduragitapajud.pdfIn PDF document text
- https://szud94.hu/img/sajatfile/files/luluruxo.pdfIn PDF document text
- http://sonnenheizung.ch/fckeditor/editor/images/file/wavolipedunusen.pdfIn PDF document text
- http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160aae011ec5e8---85074317265.pdfIn PDF document text
- https://okazdedziecko.pl/_files/Media/file/fulopinivuzajozipo.pdfIn PDF document text
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160c280358e728---xibiso.pdfIn PDF document text
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090e1112fe73---mogedefetumipamubaliw.pdfIn PDF document text
- http://goldmustang.com/files/files/galizodabifawixegatexif.pdfIn PDF document text
- https://www.baust.edu.bd/app/webroot/ckfinder/userfiles/files/23583872261.pdfIn PDF document text
- https://cuisinescartier.ca/upload/editor/file/87872589304.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_off0000e9f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9F9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001020b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1020B | 18144 bytes |
SHA-256: c2e7ec156e24302c49c0d73e1003184077b6b7f5af5de18b3319a89770cd1c8e |
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font_02_sfnt_off0001312f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1312F | 10916 bytes |
SHA-256: c0eb41c6a122ba1629d867f3dff5cc363f453d643d0bd09987faec296ddf3c29 |
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