MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains a link farm pointing to multiple websites hosted on compromised CMS platforms. This suggests a phishing or SEO manipulation campaign. The ClamAV detection and ML classifier strongly indicate malicious intent, likely involving exploitation of PDF vulnerabilities to redirect users to malicious sites.
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://fourseasons.events/wp-content/plugins/super-forms/uploads/php/files/3bd852819ba8031f72e8c59fa15de293/41784985623.pdf
- https://drsubhashawale.com/ckfinder/userfiles/files/71292756245.pdf
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b79293b231a---welod.pdf
- http://www.bufolari.com/public/immagini/file/jumutefusawajatonon.pdf
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/160833ccaee6ba---xonofujibomosepila.pdf
- https://discovercefalu.it/_data/images/file/13588494901.pdf
- https://a-pointpro.com/cms/ckfinder/userfiles/files/fepowegipipufozuboge.pdf
- https://12waktu.com/contents//files/jotifebanifasu.pdf
- http://francisfamilyreunion.net/clients/870293/File/90013444725.pdf
- http://genbreedpublisher.com/files/upfiles/file/bufinivimovegimojageni.pdf
- http://robalton.es/Albums/images/file///71333857252.pdf
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609029364ca57---27314656566.pdf
- http://www.pranabkumar.com/fckimages/file/diziteroneson.pdf
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/5tf5kt9h55i1ou5cqvr2n5jk9q/39951800055.pdf
- http://55pluscommunityspecialist.com/userfiles/files/20696291241.pdf
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/413f9a7dc18c345d38fe7f0826b9c152/robeduveb.pdf
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608b542fc18ed---58580806710.pdf
- http://culfordequestriancentre.org/UserFiles/file/5414881933.pdf
- https://proxus.nl/file/1290908662.pdf
- http://tsg-edinstvo.ru/userfiles/file/57342350629.pdf
- https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/ov0mec5snjcgchn82iubbgtcu9/nedomivutilitobozirete.pdf
- http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c92fe8d67---derafobarufujev.pdf
- https://funcarele.com/ckfinder/userfiles/files/lubite.pdf
- http://lueckerreunion2020.com/clients/e/eb/eba09433058400eda594a485f9004317/File/powiwidilagasuvabosizodir.pdf
- https://samtee.com/admin/images/file/89059960272.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=identifying+similar+triangles+methods+worksheet+answers
- 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_off0000f361.binb912f2fd353a8f66d6a209e44cd47245cbd06c1d4a4244033a735c19c95adc0f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF361 | 17396 bytes |
font_01_sfnt_off000120dd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120DD | 16792 bytes |
font_02_sfnt_off000138f4.binfd15ac7c8e04df915f0e3cc2a1b586f32311dbce41d8ef7e0d84fc89eb01dd3d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x138F4 | 11044 bytes |
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