MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised websites and potentially disposable hosting, which is a common tactic for phishing or malware distribution. The presence of numerous embedded URLs, many pointing to WordPress uploads and form plugins, further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/f3c8eebacbfa66ba4b694ea9466e618e/lobagujanaj.pdf
- http://attep.com/home/sandbox/domains/heekee.com.hk/public_html/ckfinder/userfiles/files/manituzatuwevoke.pdf
- https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/6b4dfbdeeb2b7edb4bc2de4756d1e07f/modemekigogubajesoni.pdf
- http://from.ua/upload/articles/2021/06/15/files/vageput.pdf
- http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160758fde98b1e---53962234052.pdf
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16094d9aca0c7b---lapurawunoku.pdf
- https://toppelletmachine.com/d/files/zuvekijamujowa.pdf
- http://asijskepotraviny.cz/files/file/13456991812.pdf
- https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbc2a750190---66679807566.pdf
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160919fe7817c2---waxebenuboziwob.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f2af222bf---zazasevodijuwegof.pdf
- http://thegreenlegacykeepers.com/clients/e/e8/e8dc17949b7ef813e9937e453902477f/File/22096283037.pdf
- https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083ff520bb60---23970275875.pdf
- https://aedwea.com/upload/foto/wifukorutoguso.pdf
- http://www.tomasjelinek.com/img/pub/file/gaporajivaxo.pdf
- https://addsfly.com/userfiles/file/vefovugorulobibarawakur.pdf
- https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/l0duva4m3oro0jhvhrckj3dvr7/36732669585.pdf
- http://baovephuongtroi.com/vietkiendo/upload/file/46023078457.pdf
- http://divorce-difficile.fr/userfiles/file/xalum.pdf
- https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/41c85cd0c668b4458a04678cabb5363d/dekopabivavig.pdf
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a264d73aa36---kukejeburugigifu.pdf
- http://labcoop-jsc.com/wp-content/plugins/super-forms/uploads/php/files/2b42u20bi464nb7rpka5i099vr/puronubibis.pdf
- http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff7b3d4808---59506959495.pdf
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/2hb0ubcfa94rvh1llvrkav9i0e/wibabivafitugapavobufupig.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=phokeng+guest+house
- 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_off0000f5f6.bin3d353ca6c6dbbee1d3b9fd74be57f49931a1f51da66eaed04f9c147875dc9594 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5F6 | 17368 bytes |
font_01_sfnt_off0001235f.bin800e3a4b770080d6b511db9488d5cbb23bd325a7f888a1e48de54b8f6d687cea |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1235F | 10180 bytes |
font_02_sfnt_off00013a32.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A32 | 16792 bytes |
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