MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable domains, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports the assessment of a link farm on potentially untrustworthy hosting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 6
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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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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://netlandschool.cl/files/5605897897.pdf
- http://veszpremkosar.hu/_user/file/89258396567.pdf
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/16131e26f1707f---luwilosolosilakop.pdf
- https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/ddaea114e63ff79f33340ed6ca7ba73e/nigenipusigoseka.pdf
- http://tfforming.ru/d/files/zarokefetit.pdf
- http://fullerton.kopanramen.com/uploads/files/kowekeboravarenuk.pdf
- http://gallery4walls.com/upload/editer/file/roredabipunurusivojorune.pdf
- http://portalpr-b2b.es/img/user//file/_0903431001630795055.pdf
- http://www.verneteco.com/ckfinder/userfiles/files/6358795441.pdf
- http://spec-so.ru/sites/default/files/file/2332827831.pdf
- https://funbugs.ie/files/file/71651022531.pdf
- http://esipro.fr/userfiles/file/bideta.pdf
- http://makassitools.com/userfiles/file///konafuwutigazeb.pdf
- https://vzglavniki.net/data/file/gitovini.pdf
- http://sunnysolutions.it/uploads/assets/file/zujubidinobulugemodekupu.pdf
- https://asztromiskolc.hu/ckfinder/userfiles/files/netutozovogofak.pdf
- http://georgekoldun.com/var/upload/file/tomupuxotilavamaderuxog.pdf
- http://sdds.be/userfiles/file/zugapuvuvodazolubi.pdf
- https://foodexgida.com/uploads/files/zolifukubifolike.pdf
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/7sk0q2es1fc8vtf8k0khc4k24u/vakexogibamopob.pdf
- http://hexindechem.com/upload/files/kowawolite.pdf
- https://armature.ir/cache/fck_files/file/mowakulu.pdf
- https://ksdc.in/userfiles/file/wosodimumexar.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=game+open+world+rpg+android
- https://b2cdemo.tickets.com/content/files/21353445109.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_off0000f7c1.bined11dfb772807cdc3ea0a8c1e46d9df5fb51d900124c3150c31d22d5d08570ac |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7C1 | 10592 bytes |
font_01_sfnt_off00010fa9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FA9 | 16792 bytes |
font_02_sfnt_off000127bb.bin9bfd9bcde4b44bfc3b20865141e1410d35ece8156dd49fa60344a136ba9fbea5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127BB | 16936 bytes |
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