MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites. These sites, in turn, host other PDF files, suggesting a multi-stage attack or phishing campaign. The presence of external URI heuristics and link farm indicators further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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=themes+used+in+second+class+citizen PDF link annotation
- https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160a05cfbbee0f---28089762922.pdfIn PDF document text
- https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/b061867c4a5bd088a3699ff81a91d71b/xakituvesobaganuxazikewa.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/b56cd26eedd8276c29e2d5ff0a0656f9/popawazanawududabipabe.pdfIn PDF document text
- http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e8b381852b---rimuxulizofizu.pdfIn PDF document text
- https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/d59e8739f6d1711b7ca38eaf3ecda213/64134555786.pdfIn PDF document text
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/16082060cf2d14---zumofu.pdfIn PDF document text
- http://anvlaw.com/userfiles/file/18343949023.pdfIn PDF document text
- https://www.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/3183700ae60cf9201ff8391e37e3a64e/vupikaberorejoruzas.pdfIn PDF document text
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/hndl8ph93suvrl6lo3sb69mrck/32882385780.pdfIn PDF document text
- http://hanhthien.net/uploads/file/dexomapisiv.pdfIn PDF document text
- http://sotel-perm.ru/site/file/vinakupajuvipogovemawo.pdfIn PDF document text
- http://coreaad.com/DreamDataUpload/file/16328109375.pdfIn PDF document text
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608228baba05c---17903077467.pdfIn PDF document text
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/1b890926d74b1ee309ff91ed2a70f107/14987774858.pdfIn PDF document text
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607e20901c48d---befofiratokoselanafulu.pdfIn PDF document text
- http://diamond6ranch.com/userfiles/file/nozaxuravoliruxig.pdfIn PDF document text
- https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/d0a815adae872adb223486bfec1927ab/nonewadeve.pdfIn PDF document text
- http://www.urbanwaterways.info/files/puvinirupumotazasiko.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000109fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109FE | 5084 bytes |
SHA-256: ca2e9c77d322a8c6fd847c7a190b780cfcce8b50e3236fd9ca3d59f5aa2c4bd8 |
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font_01_sfnt_off00011b27.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B27 | 10780 bytes |
SHA-256: 22763e03c60b30431c24f7c75f10465221ef90b5f23edefe9a159ff32bd373b3 |
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