MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. The PDF also contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/b0a91ab79feb8c13966fcc7f36859f24/25346532306.pdf In PDF document text
- https://xn--atpta-nfb.lv/images/userfiles/files/3750322489.pdfIn PDF document text
- http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094b774ac860---jidugepojawizubafivo.pdfIn PDF document text
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/5da602b8506a37d70c4c364b7047963a/1368459054.pdfIn PDF document text
- http://gaishachuukobuhin.com/js/upload/files/65179993153.pdfIn PDF document text
- http://antansconstructions.com/ckfinder/userfiles/files/77773316808.pdfIn PDF document text
- http://beloezoloto.ru/userfiles/file/13536491420.pdfIn PDF document text
- http://sintjorisparochie.nl/userfiles/file/1078027178.pdfIn PDF document text
- http://antifftech.com/uploadfile/file///2021051410502362.pdfIn PDF document text
- http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/160896ca683c26---4173839534.pdfIn PDF document text
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/1c739de5765ff60fab8965202128b30a/48549382809.pdfIn PDF document text
- http://saydersan.com/firma/files/pojilerilotukiva.pdfIn PDF document text
- https://associazionedynamica.it/uploads/file/98259505087.pdfIn PDF document text
- http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1c488b5a8d---17276855256.pdfIn PDF document text
- http://loadcell.vn/Images_upload/files/marawuvewatuziwufapojote.pdfIn PDF document text
- http://chinajnbt.com/images/upload/File/rumun.pdfIn PDF document text
- http://gotween.com/userfiles/file///tejafekomaxiginesolajug.pdfIn PDF document text
- http://holzweiss.at/95370747107.pdfIn PDF document text
- http://www.sospapa24.com/lib/ckfinder/imgupload/files/nezapolozu.pdfIn PDF document text
- http://wurbs-hanau.de/userfiles/file/gozeba.pdfIn PDF document text
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1b0f90a6cd---61114685427.pdfIn PDF document text
- http://celcg.pl/uploaded/file/patagajuguvazovofedagami.pdfIn PDF document text
- http://alacarte-design.de/userfiles/file/xujozowixakurajitufumab.pdfIn PDF document text
- http://olynskiconstruction.com/pics/file/sonirupuvagepapedojodufij.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=chapter+22+descent+with+modificationPDF link annotation
- https://lapdonline.org/file/36271785327.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_off0000cccc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCCC | 17460 bytes |
SHA-256: cec0bca964584b93423494cdee134a25283cd71027e0556820a6a57c4bf2a860 |
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font_01_sfnt_off0000f9d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9D4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000111eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111EB | 11076 bytes |
SHA-256: 1ddb7d2a6acb246ee72a356bbfcca7bff5eda2eaf831a65de8c1aeca66dd156e |
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