MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded JavaScript and numerous external URLs, many of which are linked to disposable hosting and appear to be part of a link farm. Heuristics indicate the document is designed as a callback phishing lure, prompting users to call a number in a billing or support context. The ML classifier and ClamAV detection strongly suggest malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9931
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://chcial.ru/uplcv?utm_term=pokemon+randomizer+rom+download+gba PDF link annotation
- http://ceraunavoltapizzeria.it/userfiles/files/piribizisoxuw.pdfIn PDF document text
- https://netlandschool.cl/files/bebubixubepugojumi.pdfIn PDF document text
- https://hse.tw/upload/file/wiriwamovamo.pdfIn PDF document text
- http://spbmedaks.ru/sites/default/files/uploads/60930598818.pdfIn PDF document text
- https://superchills.com/userfiles/file/48625601748.pdfIn PDF document text
- https://beautydent.hu/editor_up/sodoko.pdfIn PDF document text
- https://www.colegiodomus.com.br/js/ckfinder/userfiles/files/96574953451.pdfIn PDF document text
- https://nsck-cykelmotion.dk/ckfinder/userfiles/files/35293323332.pdfIn PDF document text
- http://retroldn.com/userfiles/file/18795721223.pdfIn PDF document text
- http://mycoapaisyl.com/webimages/files/43102523497.pdfIn PDF document text
- https://jecoexports.com/ckfinder/userfiles/files/69393414206.pdfIn PDF document text
- https://bepcongnghiepphuchung.vn/userfiles/file/98670804009.pdfIn PDF document text
- http://moristas.com/userfiles/files/javiw.pdfIn PDF document text
- http://printific.com/images/contentimages/files/92021275647.pdfIn PDF document text
- http://canshu.dlzj.net/upload/files/20210912082211699759.pdfIn PDF document text
- https://northcoteplaza.com/userfiles/file/zexezevutebefipatelu.pdfIn PDF document text
- https://chung-pei.com/userfiles/file/pobamud.pdfIn PDF document text
- http://studioassociatoemc.com/userfiles/files/48444347085.pdfIn PDF document text
- https://proxus.nl/file/89311345039.pdfIn PDF document text
- http://explosivedevices.ru/media/file/lodemutedenawo.pdfIn PDF document text
- http://www.itidharamshala.in/images/uploads/files/57550958367.pdfIn PDF document text
- https://pleasanton.com/wysiwygfiles/file/bejedodofobugenodoloj.pdfIn PDF document text
- https://certifiedcollisionrepair.com/home/cert/public_html/ckfinder/userfiles/files/75563577347.pdfIn PDF document text
- http://theponghop.com/upload/files/45123511760.pdfIn PDF document text
- http://amicissiapiemonteisa.it/userfiles/files/ripozokolisumasupukidi.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140159383ed2---83970131727.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_off00013694.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13694 | 19632 bytes |
SHA-256: f65fe9df3dc7495c5018920160ef77bb20b18cff7bdf564579ed9dcca7155794 |
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font_01_sfnt_off000169d6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x169D6 | 10704 bytes |
SHA-256: b675ae32698e024fbc6fb150e59b4cf7cfade5bd17eff3b376daa383b091b309 |
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font_02_sfnt_off00018230.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18230 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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