MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.
Machine Learning
- Nyx PDF Classifier malicious score 0.9908
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 https://infrive.ru/uplcv?utm_term=fisica+serway+jewett+pdf
- http://milwaukee.center/userfiles/file/dijimofinaxow.pdf
- http://interfacetravels.com/app/webroot/js/ckfinder/userfiles/files/wamepoxexabad.pdf
- http://ros-audit.com/i/up/file/41212911443.pdf
- http://agppi99.pretty-match.com/upload/files/230901821.pdf
- http://szymonadamczyk.pl/uploads/fck/file/sonerifa.pdf
- https://chezgregoire.fr/userfiles/27511259024.pdf
- https://morethancars.eu/uploads/edytor/file/litesabux.pdf
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/161366dea42af6---80499780627.pdf
- http://wagnerpc.com/userfiles/files/xisizawugomefiduxewozexa.pdf
- http://jungam21.com/upfiles/file/1630790541.pdf
- http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/pusugov.pdf
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/589db5b5b8a0a6653ae0114f7d9074ac/fugalifijixo.pdf
- http://mgrima.com/files/file/60343204833.pdf
- http://cinstech-inspect-survey.com/fckeditor_userfiles/file/rupepugonerudemupugiz.pdf
- http://rayer.cn/d/files/wiregajagekefetofira.pdf
- http://ty-universe.com/image/files/20210907_055715.pdf
- https://espiber.cl/images/uploadedimages/file/35213717355.pdf
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144840a0e451---97003027818.pdf
- https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/cd7815ed76b91e18a65defa5c191f0e4/gefek.pdf
- https://nirkongrp.com/ckfinder/userfiles/files/tavunufonetejawanubuwax.pdf
- http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16138c64fa8b09---mafemorema.pdf
- https://dhesient.com/media/morexejilufulo.pdf
- https://epagneuls-bretons.fr/caningest/images/file/77740564932.pdf
- https://bongkartuantakur.com/contents/files/kozerikujitoloxazas.pdf
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/6a53c3e1686911738ab51b89cd9ab002/27867228097.pdf
- https://ezgoe.com/10005001208290177/ckfinder/userfiles/files/vebaxi.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_off0000ca2b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA2B | 16792 bytes |
font_01_sfnt_off0000e242.bine431ab1d5a55f28c189f0218b222311c941eebf882ee442a4c554af694aa9d64 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE242 | 10652 bytes |
font_02_sfnt_off0000fad2.bina7e87d16e4781d83115a93bfe47010b69c3588c23376e9045402ac8010e34b45 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAD2 | 17548 bytes |
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