MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites, likely serving as a distribution point for further malicious content. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, suggesting it's not intended for direct user reading but rather as a container for malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9928
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://chcial.ru/uplcv?utm_term=general+studies+for+competitive+exams+pdf
- https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861ad5e7a8f---71014091892.pdf
- https://doellefjelde-mussemarked.dk/images/newsmail/file/88794016734.pdf
- http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a6bc35cb67a---zokarerusotelavugi.pdf
- http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606c76f2cd103---56994804836.pdf
- https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607666e4c358f---34685574728.pdf
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160823ad794d99---bijelolezizubabugita.pdf
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b08055b6996---sepiw.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db778d8ee14---50858738456.pdf
- https://aarhuskortet.dk/images/file/10300153291.pdf
- http://short-story.ru/upload/file/xunabixipixiv.pdf
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c20d485644e---69642638811.pdf
- http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae9d1e16939---92401219564.pdf
- http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/16078b978454b9---vexazaberogatalelatapo.pdf
- https://elesud.it/img_pagine/file/39325429643.pdf
- https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/a7b470efabdd09b9b3391797270f990d/xogukamisunibimiz.pdf
- http://say-international.eu/userfiles/file/sapis.pdf
- https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/48c92lkttq617rmfeepjndabot/fijawuzisevaxixilor.pdf
- https://bd-sokolovska.eu/userfiles/file/5208835931.pdf
- http://mrsinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/julatuf.pdf
- https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5cd99b7cec---99575572689.pdf
- https://bruceautoservice.com/files/file/68226654362.pdf
- http://www.dismaplant.com/ckfinder/userfiles/files/49408620749.pdf
- http://udemadriatic.com/userfiles/files/89747870205.pdf
- https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7c23bf412---76911373225.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_off00011be4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11BE4 | 16792 bytes |
font_01_sfnt_off000133f6.binbd89ab14ca766a6505665ef67eb1aa0e7ad4b5fe70eb4cfc4f62ad8a782d2206 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133F6 | 16868 bytes |
font_02_sfnt_off00015fac.bin448c43082dee4f519facb23009e48595e848aaaeb6c057ce909ad3ee11dd78b6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15FAC | 11088 bytes |
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