MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm or phishing lure. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a pattern of using such sites to obscure the ultimate destination. The primary attack pattern involves directing users to external URLs, likely for further exploitation or credential harvesting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9893
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://irlanc.ru/uplcv?utm_term=race+in+usa PDF link annotation
- http://thucphamchucnangmy.vn/uploads/files/75271415615.pdfIn PDF document text
- http://tortsurprise.ru/upload/redactor/files/taruzogubi.pdfIn PDF document text
- https://bak.vn/upload/files/ligitepapulisovisazetuso.pdfIn PDF document text
- http://gramercy-grand.ru/files/file/fozufamanafenomebivuxuz.pdfIn PDF document text
- http://myslizdrave.com/soubory/tufuwef.pdfIn PDF document text
- http://sensitiva.fi/UserFiles/File/76098324346.pdfIn PDF document text
- http://yoron.net/up/files/70777833781.pdfIn PDF document text
- http://phuocthuan.vn/images/pic/file/foxinuzifofumedubadip.pdfIn PDF document text
- https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/96105198c89ad52aaa1b6ac28e691605/10859086372.pdfIn PDF document text
- https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/92d73bda8b18321c2ffb5b5735c81042/gubipupozowoj.pdfIn PDF document text
- https://yk-tech.com.tw/ckfinder/uploads/ckfiles/files/26514912387.pdfIn PDF document text
- http://tfe-design.dk/userfiles/file/8952053566.pdfIn PDF document text
- https://proetcontra.hu/userfiles/file/zevubupu.pdfIn PDF document text
- http://terezmisszio.eu/files/file/47687946997.pdfIn PDF document text
- http://www.bluewhaleline.com/image/upload/File/27137277688.pdfIn PDF document text
- http://www.southforconstruction.com/frontend/web/ckfinder/userfiles/files/mapubidizow.pdfIn PDF document text
- http://imobiliariaimperio.com/files/files/79894750678.pdfIn PDF document text
- https://madame-tina.com/ckfinder/userfiles/files/35800498619.pdfIn PDF document text
- http://bancodevida.com/bancodevida/admin/images/image/file/fimesepakuberuk.pdfIn PDF document text
- http://gocep.org/data/userfiles/files/kononanazuvuwiwoduz.pdfIn PDF document text
- http://mabifitness.it/userfiles/files/5224543125.pdfIn PDF document text
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/5l59bmmvai65no0kh0fk6cs154/lavigegide.pdfIn PDF document text
- https://fratellifurloni.it/file/semekugetomirap.pdfIn PDF document text
- http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bbc2c211c0---rexopiledujuvijoti.pdfIn PDF document text
- http://4x4autok.hu/userfiles/files/teguxadenomaxulodevep.pdfIn PDF document text
- http://telegid.tv/userfiles/file/52018270580.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_off0000b133.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB133 | 10004 bytes |
SHA-256: 139510ea8e5161dd21022958dd8be7c55a3fd1e1532c220a0deb6823bfa7afc8 |
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font_01_sfnt_off0000c77b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC77B | 16024 bytes |
SHA-256: b00c689453bb37d0654801853dd44b98f61440adf06509d558b58c48c672c412 |
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font_02_sfnt_off0000f0a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0A1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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