MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file containing embedded JavaScript, which is a common technique for delivering malicious payloads or redirecting users to phishing sites. The presence of numerous external links, many pointing to compromised CMS upload directories or disposable hosting, further indicates a phishing or malicious download attempt. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://coretry.ru/uplcv?utm_term=crucial+conversations+pdf+download+free PDF link annotation
- http://alda.pl/ckfinder/userfiles/files/21464973227.pdfIn PDF document text
- https://unique-u.biz/images/uploads/file/3784151299.pdfIn PDF document text
- https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/704k85odd0r68cqugr66uvke62/lalatuzenokazeji.pdfIn PDF document text
- https://florerialafloresta.com/ckfinder/userfiles/files/23811751704.pdfIn PDF document text
- http://noxsun.com/jingkelun/userfiles/files/20210911040321.pdfIn PDF document text
- http://ks4073.com/file_media/file_image/file/66953361746.pdfIn PDF document text
- http://quangcaovuanh.com/vietkiendo/upload/file/pejopiziragigavun.pdfIn PDF document text
- https://www.l-games.jp/js/ckfinder/userfiles/files/63122694268.pdfIn PDF document text
- https://heatingboiler.ca/fck_upload/file/baruzatilisutubozowa.pdfIn PDF document text
- https://hohsingfiber.com/ufiles/files/kerekupokojokoxutexefu.pdfIn PDF document text
- https://viscom.bg/uploads/wysiwyg/files/nazemeliligabunumopo.pdfIn PDF document text
- https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/2e78163ad54f301445c9d33b5f5d11a9/rawofixe.pdfIn PDF document text
- https://lacgl.org/upload/editor/file/jevufuzexefubimubojewu.pdfIn PDF document text
- https://elegune.net/files/galeria/files/sepexubuzukavewe.pdfIn PDF document text
- https://nmg.lv/img/uploads/files/29157914032.pdfIn PDF document text
- https://foodexgida.com/uploads/files/93435381789.pdfIn PDF document text
- http://poorclarescork.ie/images/zurifefozo.pdfIn PDF document text
- https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/bqudj2387925ai3oshk2uvkqn6/63515385928.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_off0000b25f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB25F | 10896 bytes |
SHA-256: e6fffca5a8487fe7a7fd74025cb4207deeefc9940dd48a0a075792d25587dd7b |
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font_01_sfnt_off0000cbcf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBCF | 16412 bytes |
SHA-256: ead5c2e378e7d39d27063bc5996bb378597809dce8a820dc202cb4ac18810511 |
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font_02_sfnt_off0000f5bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5BF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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