MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The PDF's structure and embedded links point towards an attempt to redirect users to potentially harmful external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://pistant.ru/uplcv?utm_term=household+income+for+upper+middle+class
- https://jahanchart.ir/data/files/file/65688306271.pdf
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d1192b01f---36008956299.pdf
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160856e10be8fa---norovobase.pdf
- http://auxerretv.com/content/public/file/lojuxixib.pdf
- https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074bf8b50686---piraguliwigebuluze.pdf
- http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5bc4d7114---xijilamuxuk.pdf
- http://skncn.com/u/files/waxarulo.pdf
- https://botorka.ro/userfiles/file/3944650556.pdf
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1609833e754345---7466831516.pdf
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/1eab2dc0e48acfed054814d06c31b846/tasurij.pdf
- https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f83caac13c---61854323536.pdf
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16097cde0e7d9e---dikufetizunozid.pdf
- http://gyobel.it/public/file/68425272084.pdf
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba2d8d5791---tuduwonabibilo.pdf
- https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/30cead9ce73a0e3709e947f6daa67362/xuvivaviniluzijimev.pdf
- https://landbondcorten.com/attachment/file/482225b97f3f1a57e5dc2188dda8ef33.pdf
- http://sbnjl.com/userfiles/files/22232349479.pdf
- https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/15834705fd662b36d2aad4e250993288/fozozuwoveke.pdf
- http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/5hvb9gfjana3177gedh5kav9g7/mikusebo.pdf
- http://tano-cable.com/d/files/24102970385.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f775ab607---bivasen.pdf
- http://trans-serwis.com/userfiles/file/fugugopewawimalula.pdf
- https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609063aac300b---93665153111.pdf
- https://centrorevisionimonregalese.it/file/76336978372.pdf
- https://kodcomputers.ro/2664/uploads/36110084607.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_off0000eb8d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB8D | 16792 bytes |
font_01_sfnt_off0001039f.bin46a6cf6f4772539a642b921a3badc23915cc226234f6ceaa3734938e93da5982 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1039F | 17404 bytes |
font_02_sfnt_off00013111.bin280fbaa319aaec7aa01e599efb3753563d6d1a1eb2673883870de2316c695a22 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13111 | 10880 bytes |
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