MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a significant number of external URIs, many of which point to compromised CMS uploads or disposable hosting, forming a link farm. The embedded JavaScript likely facilitates the redirection or further payload delivery, contributing to a phishing or malware distribution attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 http://dieta-plus.pl/userfiles/file/muzetubo.pdf In PDF document text
- https://aviseco.ro/userfiles/file/99588170555.pdfIn PDF document text
- https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/5srctrihgbgo80k1eerrfml0d9/pokubixoxugakafosedo.pdfIn PDF document text
- http://ksnjl.com/userfiles/files/sinuwojufotu.pdfIn PDF document text
- http://slsnn.ru/content/files/81828906619.pdfIn PDF document text
- http://sibzakon.ru/ckfinder/userfiles/files/depigewimujigapikapuboler.pdfIn PDF document text
- http://forresterfamilyreunion.com/clients/c/cc/cc72bfd2512333311cc1ef5a4fdef90f/File/vofoxuluk.pdfIn PDF document text
- https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160ee12733e156---24916557958.pdfIn PDF document text
- http://tuvanthanhlapcongty.biz/upload/ck/files/tepuba.pdfIn PDF document text
- http://gaishachuukobuhin.com/js/upload/files/87217014923.pdfIn PDF document text
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16123fd64ad0cf---pojosovavowitowel.pdfIn PDF document text
- https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/c3897860dea7af1ae739b86a82bbc21f/sabogozeg.pdfIn PDF document text
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/972cd5ab8d0b2675b04ee3537a5aa869/daduvorubesojoxaw.pdfIn PDF document text
- http://beijingxinzhi.com/userfiles/file/20210615210004_1399636193.pdfIn PDF document text
- http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/776tvkdjin4jg44o5j5n2qkno2/73741959557.pdfIn PDF document text
- http://ldkxzzs.com/images/userfiles/file/41097295130.pdfIn PDF document text
- http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb8737a841---josugagewexedebositomib.pdfIn PDF document text
- http://zabradli-znerezu.cz/userfiles/file/fefawelu.pdfIn PDF document text
- http://hit-air.pro/ckfinder/userfiles/files/23028721090.pdfIn PDF document text
- http://klubalfa.org/img/userfiles/file/73828237875.pdfIn PDF document text
- http://imssp.by/data/images/fxeditor/file/bifojogigerikikuwuveta.pdfIn PDF document text
- http://bjjiffy.com/upload/pigosijotawitapabazeku.pdfIn PDF document text
- https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/8453160953e99dc6b1fa9ec6946ac4b7/58486806186.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/2ebb8b698cc6d78efb71bf251f39e19f/binikupo.pdfIn PDF document text
- http://phuketdriveschool.com/userfiles/file/pogopezuzironipomege.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=watlow+ez-zone+pm3+manualPDF link annotation
- 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_off0000d450.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD450 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ec67.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC67 | 10500 bytes |
SHA-256: 55777768b8ca72e54edf03a993f7b816012f9e384b453cbf8ad6054314cee53b |
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font_02_sfnt_off0001046c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1046C | 18064 bytes |
SHA-256: 7784571e59ee155cd42d5ccc7ba188b6c3ccf06721f67f579f4d9cad35f044ff |
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