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 executing malicious code. The PDF also contains numerous external URIs, many of which point to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/5mm4eloeiakdta6puriqacsds3/sutezulab.pdf In PDF document text
- http://autoklej.pl/app/webroot/media/files/90189266723.pdfIn PDF document text
- https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609874eca55dc---37595339468.pdfIn PDF document text
- http://omgmediatank.com/userfiles/files/24779778767.pdfIn PDF document text
- http://fouladsazanco.com/Upload/file/wimufijamobonilimulososax.pdfIn PDF document text
- http://socukorglutamatmentesfuszer.hu/ckfinder/userfiles/files/lakusit.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/ece0b1e5ncqsof9jmirfotaao2/54668047486.pdfIn PDF document text
- http://kuhomania.ru/ckfinder/userfiles/files/60356680671.pdfIn PDF document text
- http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/b887mbu7105td12lcshns5kn13/29170789742.pdfIn PDF document text
- http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/g5bauco52p2o8u6kk2oen8lsl1/37318555461.pdfIn PDF document text
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16096fc6ad1ad0---63638633375.pdfIn PDF document text
- https://treasurehunterdetectors.com/ckfinder/userfiles/files/59042104349.pdfIn PDF document text
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/2cc7hjne0s7vnia7dadiho3nqs/19457153086.pdfIn PDF document text
- https://polnische-zaune.de/userfiles/file/doxuwubu.pdfIn PDF document text
- https://pjkconstruction.ca/images/file/sizavaduripuxobitev.pdfIn PDF document text
- http://zvezda-rostov.ru/ckfinder/userfiles/files/87525154956.pdfIn PDF document text
- http://dgelc.com/userfiles/file/20210821160404.pdfIn PDF document text
- http://flexa.cz/docs/file/7352451653.pdfIn PDF document text
- http://clinicaveterinariabilancino.it/userfiles/files/13374871533.pdfIn PDF document text
- http://thedreaminitiative.org/Content/Admin/uploads/files/13803195062.pdfIn PDF document text
- https://soyana.de/js/ckfinder/userfiles/files/judikimexi.pdfIn PDF document text
- https://bienenaktuell.com/sites/bienenaktuell.com/files/file/luzidetifejuvas.pdfIn PDF document text
- http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091d342cd8ec---pupukadovosewufufamuvejew.pdfIn PDF document text
- https://anandamsanyal.com/userfiles/file/35096034745.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=accidents+at+workplace+pdfPDF link annotation
- 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_off0000bb35.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB35 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d34c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD34C | 10772 bytes |
SHA-256: ebc5b7e7ed81b5bde5b6e290fb4bc1b3a5b57e6fce3f468e98fe267cd27256d6 |
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font_02_sfnt_off0000ec55.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC55 | 15564 bytes |
SHA-256: 3675564aa8e9523f6751036e6a8613a8e595c8edaebd5726761b641af54d08c6 |
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