MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery. The presence of multiple external URIs and a link farm structure points towards a tactic of redirecting users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://synerhu.ru/uplcv?utm_term=adblock+android+free+download PDF link annotation
- https://angkalaris.com/contents/files/lekapodepivabevob.pdfIn PDF document text
- https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/rqs450s6ejp5hgb8ibknrr96ea/73293173609.pdfIn PDF document text
- http://evevoyance.fr/adh/.-/file/41696105635.pdfIn PDF document text
- https://egyptsuntours.com/userfiles/files/wegebelagowolotilipuxe.pdfIn PDF document text
- https://nulifeus.com/~nulife/userfiles/file/dosikimujejonipedebosa.pdfIn PDF document text
- http://basumati.com/app/webroot/ckfinder/userfiles/files/pisulikuvozito.pdfIn PDF document text
- https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/7008fe08fb78da0b98e93dafb78f01a0/dopunaxifudalarep.pdfIn PDF document text
- http://www.yankey.com.tw/demo/public/editor/ckfinder/upload/user_upload/files/nebuwedogivajavasumexoxo.pdfIn PDF document text
- http://snuhonors.com/userfiles/file/49826627375.pdfIn PDF document text
- https://mkontakt.pl/dat/file/medojafezojuxifazoruvage.pdfIn PDF document text
- http://nwatchonline.com/userfiles/file/votufupama.pdfIn PDF document text
- https://eletroluz-al.com/_IMG/img_internas/file/32611770241.pdfIn PDF document text
- https://www.benkorner.nl/admin/library/ckfinder/userfiles/files/xuronekegugipogum.pdfIn PDF document text
- http://swotaweb.com/img/upload/file/69305894671.pdfIn PDF document text
- http://patchworkstudio.de/userfiles/file/80540999070.pdfIn PDF document text
- https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614df3575209c---50062859008.pdfIn PDF document text
- http://jrecchina.com/ckeditor/ckfinder/userfiles/files/jadakinosabedelorabolulo.pdfIn PDF document text
- http://studiochiodo.eu/userfiles/files/lemotagudolabiserolip.pdfIn PDF document text
- http://mengnuanua.com/app/webroot/files/files/21932827987.pdfIn PDF document text
- https://nonbodepsg.com/uploads/files/rujalakokov.pdfIn PDF document text
- http://seoulsquare.com/userfiles/file/73389298774.pdfIn PDF document text
- https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/2299292edcc9feaa737e5d44473ab6d7/969505128.pdfIn PDF document text
- http://www.accl-calibration.com/login/ckfinder/userfiles/files/2908458558.pdfIn PDF document text
- http://bronnicy.inhome360.ru/admin/ckfinder/userfiles/files/tadovusekekogu.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_off0000b2f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2F0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cb02.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB02 | 17404 bytes |
SHA-256: 2a9bdadb5aa4213b8d6ecdef6e1d04b6a334db4fc91ed654e780d073948ba738 |
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font_02_sfnt_off0000f74e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF74E | 10504 bytes |
SHA-256: 6196547b1bc48a6102e067a22edd3bd3330177981557a605a43af71256c2fa83 |
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