MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a large number of external URIs, many of which point to compromised websites or disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to download a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://infrive.ru/uplcv?utm_term=download+diamond+rush+apk
- https://aiwcecckolkata.org/FCKeditor/file/romikegobaguwejebuneli.pdf
- http://redemaisfarma.com/userfiles/file/gutodaforedozab.pdf
- http://thietkewebsite.btccorp.vn/uploads/files/roxaganexi.pdf
- http://bratislava.topenglish.sk/app/webroot/gallery/files/busomupoxobibalexi.pdf
- http://vucert.vn/uploads/files/21524890155.pdf
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16131a5d92fbe3---tevuxukupirerikix.pdf
- https://playworkspartnership.ca/sites/default/files/file/nemiravok.pdf
- http://lyzebrno.cz/userfiles/file/mogutonepuz.pdf
- http://scuderia512.com/js/upload/files/88297126917.pdf
- https://resttour.com/images/userfiles/files/2461217401.pdf
- https://sgotomotiv.org/upload/files/37229156984.pdf
- https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161346f1c11b21---puxokonesijadosirevit.pdf
- https://ibericadearmerias.com/file/40893357328.pdf
- https://ubranni.com/uploader/files/49146612111.pdf
- https://ovistar-dz.com/ckfinder/userfiles/files/dizoluwivuwo.pdf
- http://fruhmann-elektrotechnik.at/9051340566.pdf
- http://www.pattyn360.com/upload/forum/files/89952609195.pdf
- https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/161411eff1093a---16136954213.pdf
- http://logistra.fr/ressource/site-image/files/sefikitaje.pdf
- http://hzzxtl.com/UploadFile/file/20210908155944584.pdf
- http://papaicountrylodge-longstay.com/user_img/files/tafozafetejuduv.pdf
- http://nanouklid.cz/upload/file/61869808162.pdf
- http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/8ji928oas008cekej0r8rqkcd4/dodexudonutoxoraruzo.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_off0000bec7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBEC7 | 16792 bytes |
font_01_sfnt_off0000d6d9.bin8eb19929e370c3c8508b995686452981dec0b3db46ce2fb87a813d0300223f55 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6D9 | 16052 bytes |
font_02_sfnt_off0000ffe4.bind16a1644930d7b28eeed83b9ebd393d336cb7ef68244f6eebd506e82be757c08 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFE4 | 10704 bytes |
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