MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. Heuristics indicate it functions as a link farm, directing users to multiple external URLs, some hosted on potentially compromised CMS uploads. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest an attempt to redirect users to malicious sites for further exploitation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://huntic.ru/uplcv?utm_term=oxygen+cycle+meaning PDF link annotation
- http://www.brickchamber.com/ckfinder/userfiles/files/nebav.pdfIn PDF document text
- https://www.jancsoalapitvany.hu/ckfinder/userfiles/files/pajukafeja.pdfIn PDF document text
- http://zap-interactive.com/uploads/files/67721042202.pdfIn PDF document text
- http://sinsg.com/files/fckeditor/file/sufevubodebege.pdfIn PDF document text
- http://zehanbiopharma.com/upload/files/makelumakulujiwulotanoza.pdfIn PDF document text
- http://frutapacargentina.com/ckfinder/userfiles/files/tubonanuganagoluvejaxipom.pdfIn PDF document text
- http://vesimport.ru/userfiles/file/ferumenojowituzeda.pdfIn PDF document text
- http://primethailand.com/ckfinder/userfiles/files/24218173247.pdfIn PDF document text
- http://erh-hu.com/userfiles/file/39219641711.pdfIn PDF document text
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141505ce05b4---95481586985.pdfIn PDF document text
- https://lesartsdansmonjardin.com/userfiles/file/20210925005611.pdfIn PDF document text
- http://bivalyracing.hu/files/file/72889559537.pdfIn PDF document text
- https://littleitalypizzany.com/nbloom/fckuploads/file/86079496877.pdfIn PDF document text
- https://lerivagedesmilleetangs.com/caningest/images/file/wizilefidokowinog.pdfIn PDF document text
- https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/c5a7a53f158fd0246bc2c36962a179eb/teterufubot.pdfIn PDF document text
- http://xtra360.net/campannas/file/tedasovevufiviluza.pdfIn PDF document text
- http://fortwashington.abwingsmd.com/uploads/files/lofewitarut.pdfIn PDF document text
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/182c15a7b19b32a35c850ef378b80c6b/24897223940.pdfIn PDF document text
- https://cryptobasics.biz/uploads/files/27908655445.pdfIn PDF document text
- https://ketdoanbus.com/webroot/img/files/xijudirivamo.pdfIn PDF document text
- https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/aa4e406561fd13cd22d8ddc457bc3283/fatimabapo.pdfIn PDF document text
- http://qhchemicalsfeed.com/upload/files/81087678011.pdfIn PDF document text
- https://giverny-bkk.com/upload/files/16475306372.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_off0000ba6a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA6A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d27c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD27C | 17204 bytes |
SHA-256: 61cf81361a7205ea2af456c8b30281a344818f9213ff70ee7df40dd5b5722f9f |
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font_02_sfnt_off0000ff08.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF08 | 10328 bytes |
SHA-256: 279002a71a9dbbd77a239ef1a38c345a797d8b25e8948160a25d8391d7812be3 |
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