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. It also contains numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 http://vankouwenenmastop.nl/UserFiles/file/8404788527.pdf In PDF document text
- https://novahealthclinic.ca/userfiles/file/feperakexoraxizo.pdfIn PDF document text
- http://ahcxdq.com/uploads/file/062325499676.pdfIn PDF document text
- http://stellamaris.cz/userfiles/nusafetakoxadijenikuko.pdfIn PDF document text
- http://sam-global.info/files/file/97168453858.pdfIn PDF document text
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/r7c5dc3b4g2ol51lrmf8q5a237/69824371122.pdfIn PDF document text
- http://hopkinshigh62.com/clients/7/77/7764523e397120ad9b09b1da26998858/File/rowebabe.pdfIn PDF document text
- https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/0e0ce94c6d39a460d5fa1df1046f4bef/36441805474.pdfIn PDF document text
- https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/4t0d4aogne5hi5no701lgqgme2/velijavazamonotebininabu.pdfIn PDF document text
- https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/e88cab18964bbf1991d92e5c2e49059c/9337608204.pdfIn PDF document text
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096bc169b1b7---xokesijifatiweve.pdfIn PDF document text
- http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16093d009b5e20---fizuwativivin.pdfIn PDF document text
- http://soluzionebenessere.eu/userfiles/files/wilatikununadisotis.pdfIn PDF document text
- https://mumegram.com/userfiles/file/sagadakamos.pdfIn PDF document text
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dc8c463029---50866251086.pdfIn PDF document text
- https://ndmoyun.com/calisma2/files/uploads/91810337863.pdfIn PDF document text
- http://kurumakaitori-one.com/js/upload/files/tunoxezowopoxasefof.pdfIn PDF document text
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/af7a4b862136bd8be31c022bf634aeaf/lagowewonu.pdfIn PDF document text
- https://angkortaxiservice.com/userfiles/file/rumekopilokow.pdfIn PDF document text
- http://bocghebinhduong.com/media/ftp/file/64045022464.pdfIn PDF document text
- https://szekszardportal.hu/userfiles/file/lavijizapufevo.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddf18164c09---39127389683.pdfIn PDF document text
- http://dharmapremipariwar.org/userfiles/file/toveme.pdfIn PDF document text
- http://seoulmenu.com/uploads/files/ruzukasi.pdfIn PDF document text
- https://drrajanmahtani.com/userfiles/files/lenakedimakafol.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=melt+ice+on+driveway+without+saltPDF 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_off0000ed20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED20 | 10824 bytes |
SHA-256: ae7f997f61c8296ff241c2b5402f765d0dc30763fce29c9729f88fbce31e1a74 |
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font_01_sfnt_off00010623.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10623 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011e35.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E35 | 17212 bytes |
SHA-256: 276b0a91b3c949295a30511a8334adf7e251da3701ec89dfd13ad0306b3f1e0e |
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