MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external PDFs, many hosted on compromised websites or disposable domains, suggesting a link farm designed to distribute further malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://coebmsf.com/userfiles/file/64302804422.pdf In PDF document text
- http://jyjwqj.com/uploadfile/file///2021051804001717.pdfIn PDF document text
- http://sutinlawkrabi.com/ckfinder/userfiles/files/tenowaxot.pdfIn PDF document text
- http://seoulmenu.com/uploads/files/8748807348.pdfIn PDF document text
- http://sbstroy53.ru/img/files/28135546581.pdfIn PDF document text
- https://urbanlivin.lu/userfiles/files/14044236011.pdfIn PDF document text
- https://eletvital.hu/uploads/files/vimoniparew.pdfIn PDF document text
- http://hornets88.com/clients/56662/File/sabunatoje.pdfIn PDF document text
- http://guyfamilyreunion.com/clients/41950/File/mopobebeto.pdfIn PDF document text
- http://serdceprirody.ru/userfiles/file/tunuwetejutiziwugomav.pdfIn PDF document text
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1b8c411d95---tenibe.pdfIn PDF document text
- https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/293g9ls16ri9d9enib61t2h7fd/55612954116.pdfIn PDF document text
- https://fiscconsulting.com/userfiles/file/44406026041.pdfIn PDF document text
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607762aeab99c---7972793840.pdfIn PDF document text
- http://minhanh.com/files/kewirelanej.pdfIn PDF document text
- https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c161679aa20---2813070923.pdfIn PDF document text
- http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607e395a5b85c---9342442349.pdfIn PDF document text
- http://cungcapluonech.com/upload/files/luxadifuzawafadidugovowom.pdfIn PDF document text
- http://xn--80ahcjevtqq.xn--p1ai/ckfinder/userfiles/files/kewibu.pdfIn PDF document text
- https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608587a5382fe---fazokokamujonivutaforuja.pdfIn PDF document text
- https://7foro.exceltur.org/exceltur_nuevo/ckfinder/userfiles/files/xiwulubaterit.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=design+of+prestressed+concrete+notes+pdfPDF 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_off0000ce86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE86 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e69d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE69D | 10588 bytes |
SHA-256: b98d4bf68a2217cb84a3a71356be46ab77618e1fbc9afbb0d12a892723a86c13 |
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font_02_sfnt_off0000feb2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEB2 | 18324 bytes |
SHA-256: ba909a9dda4c2b8eb8523db3412e0128fa7950ac95c5ddb0dcd8cd77b7717987 |
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