MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF sample was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting a link farm or redirection mechanism. The primary purpose seems to be directing users to external sites, likely for malicious purposes such as credential harvesting or further payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://crewmak.ru/uplcv?utm_term=hack+into+router+admin+page
- http://exclusivelimoservice.com/ckfinder/userfiles/files/49782075009.pdf
- http://bjerkelunden.org/content/files/userfiles/file///20532528261.pdf
- http://brukbet.com/user_images/file/23696892714.pdf
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161366a0f29d8f---66699568876.pdf
- http://lnaixi.com/userfiles/file/20210910215307_1640494325.pdf
- https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/91b84fd7ae65310d1ade4bbf54280be5/48524383459.pdf
- https://www.chablis-gautherin.com/ckfinder/userfiles/files/tomim.pdf
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16139eeeb5248b---nebifibovumelopiv.pdf
- http://traiteurluc.com/userfiles/file/51417826311.pdf
- https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd1a20cc25---1246321812.pdf
- https://www.sacict.or.th/ckfinder/userfiles/files/kexodosebarodazuvaroje.pdf
- https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/acf8b9f4a17a7b429dc623ea320bcc81/tipixowoge.pdf
- http://zhouzhuanx.com/v15/Upload/file/20219741883287.pdf
- https://coastalholidayproperty.com/ckfinder/userfiles/files/16563696250.pdf
- http://qdxqw.com/uploadfile/file/98855128566.pdf
- http://christ-china.com/filespath/files/20210904065052.pdf
- http://gocchame.vn/app/webroot/img/uploads/files/kitemefekefilasogirixo.pdf
- http://cmtsport.com/pliki/papitakugejef.pdf
- https://dom4m.de/userfiles/files/66628676782.pdf
- http://pharmabiosolutions.com/filespath/files/20210906041621.pdf
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1613390bdb1ba2---masenegafugifas.pdf
- https://nutrishop.in/ci/userfiles/files/91127590179.pdf
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/161405ea57bbbb---17019176688.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_off0000ba94.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA94 | 16792 bytes |
font_01_sfnt_off0000d2ab.binb86350c0db8ced13b85fe4e4eff2a5ba15de25e567783e348e0c82fa8ebe646b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD2AB | 10824 bytes |
font_02_sfnt_off0000eb60.bined3d542e202898d1c647367ea2cc03cfa3e6d7918c768a4abd6be3adeff7d962 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB60 | 16852 bytes |
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