MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample contains embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities to execute malicious code. It also functions as a link farm, directing users to multiple compromised websites, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://archism.ru/uplcv?utm_term=types+of+dic
- http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210505224042988748g6l8hi.pdf
- https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/aaafaa7e82327f7fd7e273b7e912c514/8991729609.pdf
- https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/q4994r9pjg53cki715rlm3hk8q/kipod.pdf
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160960541629c1---wabepejoje.pdf
- https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/ebdac0aedb117ed99d02b81c2b0762ea/20335569175.pdf
- http://kingsfinancialconsulting.com/userfiles/file/41515571705.pdf
- http://salinahighschool1968.com/clients/3/33/33fcb9b832a528c934b1ac42c6b88a99/File/wejuparer.pdf
- http://pensjonatagat.pl/userfiles/file/mivikode.pdf
- https://ajur.rest/uploads/userfiles/file/63338592719.pdf
- https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0b0a3390c---todizipiletifovumidakud.pdf
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1608e40fff127f---90674033723.pdf
- https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/hap59kncfaokmfl2o2egl50lfo/63658785379.pdf
- https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16075f20a0393f---nakanusiwibelunup.pdf
- https://www.varisistanbul.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a159c538a---66804467676.pdf
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/5d3e262d1b52d5f21682671a81c18081/dofitatonisekakulora.pdf
- https://www.hotwaterfactory.com.au/wp-content/plugins/super-forms/uploads/php/files/0958b7ad12277e11812b8f9d4fa1a6b3/35846105366.pdf
- https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/18f78ee5f7dcdf60d8b8b56c1a089f90/mimarajos.pdf
- http://shihtzufurbabies.net/clients/d/d3/d383cf0c90cf2d2391705d5438694b4c/File/46219245564.pdf
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/16081ac40ee30e---gagutun.pdf
- http://hasyo.net/files/file/wavakekopef.pdf
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/ceee9652e56d3905025e5900c478b8a5/leverizidedikolirufet.pdf
- https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/ec9e8c77cd98be8ccbff2127a3335ea4/82058099476.pdf
- http://cobansut.com/userfiles/file/26425325880.pdf
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070994a15c6a---67494591769.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_off0000f955.bincc0eb418ed932931f642b11d6ea42f8cf1b4316e3f52ea6f503dbfd87a09a1d8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF955 | 17332 bytes |
font_01_sfnt_off000126c0.bina9d12a88d40a090b989a0f7eb49a95d27df6c9f0064a61c8e1bab1f158448fcc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126C0 | 10180 bytes |
font_02_sfnt_off00013db4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13DB4 | 16792 bytes |
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