MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, indicating a link farm or redirection strategy. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. The presence of multiple PDF-specific heuristics related to URI and link farms reinforces this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://laborke.ru/uplcv?utm_term=paper+and+quill+minecraft PDF link annotation
- http://tdjl.com/uploadfile/file///2021090505204719.pdfIn PDF document text
- https://habibitours.net/ckfinder/userfiles/files/foxakutikotaku.pdfIn PDF document text
- https://etadelloro.it/images/file/doxomipabojopekuk.pdfIn PDF document text
- http://thechitay.com/uploads/userfiles/file/72908794116.pdfIn PDF document text
- http://www.sname.org.tw/sname/ckfinder/userfiles/files/kiwilatareros.pdfIn PDF document text
- https://fiberglasssupplydepot.com/userfiles/files/13757816125.pdfIn PDF document text
- http://bangladeshceramicsociety.com/uploads/editor/files/56468973472.pdfIn PDF document text
- http://scandirent-new.ru/uploads/assets/file/87962922240.pdfIn PDF document text
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/f2c2e21363ceb4691affba8ecbefad1b/vefusezetaxadujetas.pdfIn PDF document text
- https://tabularasa.lv/sites/tabularasa/uploads/documents/files/59636174686.pdfIn PDF document text
- http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16136be24acb5b---42165620187.pdfIn PDF document text
- https://fotografski-studio.kost.si/userfiles/file/13559446304.pdfIn PDF document text
- http://eichler-kammerer.de/42904987018.pdfIn PDF document text
- http://ssanadia.in/userfiles/file/vajumudebagiw.pdfIn PDF document text
- http://kozelsk-adm.ru/files/uploads/files/39315834679.pdfIn PDF document text
- http://pibar.tw/uploads/files/202109060803023041.pdfIn PDF document text
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f16538cfc4---47742913279.pdfIn PDF document text
- https://grupo-bahia-real-estate.com/ckfinder/userfiles/files/bemaguvepajipa.pdfIn PDF document text
- http://orem.mn/uploads/files/20374855762.pdfIn PDF document text
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145b99ae0115---89427942003.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_off0000d695.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD695 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000eeac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEAC | 10740 bytes |
SHA-256: 61a13df6900a986b461276602f42401e65b7a5ed789e62ec49bad93c2a2b77ad |
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font_02_sfnt_off0001070f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1070F | 18700 bytes |
SHA-256: b613f5e265a00a0c79ef669ddef58319493075b3bf8c539fcfe89250b1e19cc2 |
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