MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of external links, many pointing to other PDF files hosted on various domains, some of which appear to be compromised WordPress sites. This structure is characteristic of a link farm designed to distribute malicious content or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://nomylo.ru/uplcv?utm_term=old+man+and+the+sea+project+pdf PDF link annotation
- http://wellnesszeewolde.nl/site/data/ws/files/pabuxafob.pdfIn PDF document text
- http://precisao.org/files/files/kosopazimubevod.pdfIn PDF document text
- http://nineslash.com/user_file/file/xasodakefujobuzusaronukik.pdfIn PDF document text
- http://yearbookplus.com/uploads/ckfinder/files/79821833625.pdfIn PDF document text
- http://np-laser.com/upload_fck/file/2021-9-9/20210909170302824075.pdfIn PDF document text
- http://hud101.vn/webroot/img/posts/files/worenavomudoketatejis.pdfIn PDF document text
- http://pickup-ws.com/userfiles/files/samivokalisusotili.pdfIn PDF document text
- https://mraos.com/web/userfiles/file/95307036001.pdfIn PDF document text
- http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/161309d038780c---16248193257.pdfIn PDF document text
- http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130d3ed11bf6---zogoroxosutofor.pdfIn PDF document text
- https://cuatudongsaigon.net/uploads/files/68163010346.pdfIn PDF document text
- http://immobilieninvestors.org/userfiles/file/viwokesijupasederiw.pdfIn PDF document text
- http://greenbrier101.com/userimages/boxubunafeleworalid.pdfIn PDF document text
- http://ortopediaszombathely.hu/editor_up/vexoripo.pdfIn PDF document text
- http://evevoyance.fr/adh/.-/file/nirulofemob.pdfIn PDF document text
- https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/161336cc91f2f4---86527941863.pdfIn PDF document text
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bcad9e9d10---dulogufilegekeweki.pdfIn PDF document text
- http://studioriboldi.eu/userfiles/files/likevuxumikawobenu.pdfIn PDF document text
- https://ispartaorganizasyon.com/ckfinder/upload/files/18323982092.pdfIn PDF document text
- http://bualuang101.com/backoffice/upload/files/93271802973.pdfIn PDF document text
- http://tantex.org/tantex/tantexuserfiles/file/mowotukeboruzafazurirabam.pdfIn PDF document text
- http://baharev76.ru/userfiles/file/vibutakide.pdfIn PDF document text
- http://dichvutheapec.com/upload/FCK/file/xolidagategazo.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_off0000bc56.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC56 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d468.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD468 | 16552 bytes |
SHA-256: 9e18ff8812532feed3a8f14c4d080fdac727904057cee83e53baffaeafa3a8cf |
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font_02_sfnt_off0000fe8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE8B | 10948 bytes |
SHA-256: 02deff4b16d7f47fb05318748d5f86e691da58835e0e604b750165d4811d1351 |
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