MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to various disposable hosting sites, likely to download further malicious payloads. The presence of multiple PDF link farm indicators and a high ML score supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9957
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 http://timnhanhonline.vn/upload/files/30195899501.pdf In PDF document text
- https://webmenuplus.com/images/file/napoxawesulutad.pdfIn PDF document text
- http://prmakeup.com/Image/files/nusefalivenagafage.pdfIn PDF document text
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/161322d1c093f5---56779677209.pdfIn PDF document text
- http://optimaglobal.net/ckupload/files/42093777256.pdfIn PDF document text
- http://vetportonaccio.it/userfiles/files/82872097170.pdfIn PDF document text
- http://apsons.eu/files/file/51197905328.pdfIn PDF document text
- http://anhuifan.com/upload_fck/file/2021-9-2/20210902051915509731.pdfIn PDF document text
- http://www.advokat.com/app/webroot/img/fck/file/39727990681.pdfIn PDF document text
- http://nwhouse.ru/uploads/file/57820224218.pdfIn PDF document text
- http://maschimaurizio.it/userfiles/files/24211417351.pdfIn PDF document text
- http://rollfactorytogo.com/uploads/files/54559384906.pdfIn PDF document text
- http://ccshecea.org/upload/files/gagawosijibarasa.pdfIn PDF document text
- http://puntolinea.org/userfiles/files/folavo.pdfIn PDF document text
- http://chinalabware.net/d/files/98421794658.pdfIn PDF document text
- http://jiendurancecoaching.com/ckfinder/userfiles/files/nizovusulasodado.pdfIn PDF document text
- http://allineers.morefriendship.com/upload/files/kopugofanijejaxu.pdfIn PDF document text
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/f885ed7a4d09edbb0cbf539e5567de03/69214581152.pdfIn PDF document text
- http://icmasistemas.com/userfiles/files/kidujasolumoduju.pdfIn PDF document text
- http://flamefitnessstudio.com/cewit/images/file/feridaxame.pdfIn PDF document text
- https://ketdoanbus.com/webroot/img/files/balemipe.pdfIn PDF document text
- https://ashasuchikala.com/ckfinder/userfiles/files/79519746567.pdfIn PDF document text
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161396f3250175---jumekolodosudurokekefe.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=root+installer+for+android+free+downloadPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ae41.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE41 | 14540 bytes |
SHA-256: 786da27baefaac9d5216a53e1f6dd30c8d59e629c6774457ae18599ade55f18f |
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font_01_sfnt_off0000d1fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1FB | 10476 bytes |
SHA-256: 8a2b28614b1f079289d0450b4e8532511b73de9458711dbb17f98163b388f6ab |
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font_02_sfnt_off0000e9fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9FA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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