MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links indicates an attempt to deliver a secondary payload or conduct phishing operations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://crysiq.ru/uplcv?utm_term=how+to+only+save+part+of+a+pdf
- http://beergolfers.com./blog/images/file/68645970778.pdf
- http://aklond.com/UploadFilesfile///2021043006155329.pdf
- https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/n1f0aljjot440nbn31961ggfav/24788333381.pdf
- https://vsetinrally.cz/userfiles/file/jetar.pdf
- https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1a61288dd5---79249010372.pdf
- http://zavalinka.by/var/upload/file/watigumirujuworejaravowe.pdf
- https://tedvandergulik.nl/userimages/file/23580344200.pdf
- http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/20as2uv2u1cvognjiroma7k2v6/92830336740.pdf
- http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c96c127c6db---7679243890.pdf
- https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091ed2fc5d66---subupovajom.pdf
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a307ed844bf---22787685010.pdf
- https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/99537f7433f44399d2a4ace93ce748ff/61953287080.pdf
- https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/aa5aqmt1q6g9qq2lk3dtblhh8e/33523030676.pdf
- http://coming-c.com/userfiles/file/nobizonomipesidu.pdf
- http://ahchala.com/img/file/digeroxude.pdf
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/28c00e730048f45341932e22983497dc/dikekezubukodorigube.pdf
- https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855bfb80d7b---gevadirafovela.pdf
- https://ratsimae.ee/media/contents/file/8763961708.pdf
- https://aduanaldelvalle.com/userfiles/file/sixitazinesowerib.pdf
- http://zzliuxue.com/upfile/file///jotedibiguragopefum.pdf
- http://axwelindia.com/uploads/99715282847.pdf
- https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/af1c1cc2f1b81d49a7964232b390b42e/povanute.pdf
- https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607209c9b1eab---bizawazezomokelipabigiz.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000100f8.binac75ae14a925987037cfa8ba96eaf887f69bfb65b11fe4fe0a922f3698c2c757 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100F8 | 10656 bytes |
font_01_sfnt_off00011991.bincfab17e18f89ecbce7f72b683bd013fd0079fce537bbdc9e58cb310670e17e5f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11991 | 17744 bytes |
font_02_sfnt_off000147ef.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x147EF | 16792 bytes |
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