MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to numerous external PDF files hosted on compromised websites and disposable domains, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the link farm indicate an attempt to redirect users to malicious content, likely as part of a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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 http://xn--lv0az70cxar.tw/uploads/files/202108140334513218.pdf In PDF document text
- http://colafranceschi.it/userfiles/files/83577510576.pdfIn PDF document text
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe37960c45---virezaneroz.pdfIn PDF document text
- http://anoh.net/pds/userfiles/files/natawiziwirev.pdfIn PDF document text
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/6d2q350utomkk3tqd7piupabuj/94345777172.pdfIn PDF document text
- https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/svs16q0dn0b42h9hkntlssm716/livizaginilanotamibasuv.pdfIn PDF document text
- http://nct-vn.com/userfiles/file/94497162430.pdfIn PDF document text
- http://smit-electronic.hr/upload/datoteke/kufazakizakobat.pdfIn PDF document text
- http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160920a4500ccc---7644853956.pdfIn PDF document text
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/2e9246e3bbca9e466b73590c1978950d/71822566166.pdfIn PDF document text
- http://aodaibooking.com/FileData/ckfinder/files/20210605_A5AFC69CDFE96A44.pdfIn PDF document text
- https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/c7e0ce4043a0d0c664b900e26157701c/kotabuxadosamarurekomigib.pdfIn PDF document text
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160fa5348dd8b1---95483035627.pdfIn PDF document text
- http://escuelasfutbol8.com/docs/files/97755247356.pdfIn PDF document text
- https://nsck-cykelmotion.dk/userfiles/file/2062040549.pdfIn PDF document text
- https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6a9a606f43---86716192987.pdfIn PDF document text
- https://ipic.vn/userfiles/file/kunep.pdfIn PDF document text
- https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/f9cnh0i3o7r6t88ohupfpn98jp/57458290259.pdfIn PDF document text
- https://cardion.dk/gfx/fckimages/file/2437341214.pdfIn PDF document text
- http://anhbanglaw.com/userfiles/file/56673492054.pdfIn PDF document text
- http://retrolondontees.com/userfiles/file/59039726708.pdfIn PDF document text
- http://chukysovin.com/img-svc/files/pofojotem.pdfIn PDF document text
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608436db82c63---48263605504.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=how+to+reset+omron+wrist+blood+pressure+monitorPDF 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_off0000e0a0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0A0 | 17524 bytes |
SHA-256: be3d1d5802567385ea0fce6fb50242a5808d228f42fa97d882087fb76f82315d |
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font_01_sfnt_off00010d8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D8B | 10708 bytes |
SHA-256: b5717344564971aa1f62323c85fafee33dee9e36f0bb613ec49071f2168e3da0 |
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font_02_sfnt_off000125e2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125E2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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