MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users. The primary attack pattern involves luring users to these external sites, which likely host further malicious content or phishing pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://arbormaster.net/uploads/files/90204009668.pdf In PDF document text
- http://beijingxinzhi.com/userfiles/file/20210513224655_133442994.pdfIn PDF document text
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b28c03baae6---16579558603.pdfIn PDF document text
- https://vinacomvietnam.vn/uploads/news_file/83722573136.pdfIn PDF document text
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/b0p068s6es3aa5hfb0qvbjop05/rabevesubokobusebin.pdfIn PDF document text
- https://ozmutludokum.com/userfiles/file/95717779765.pdfIn PDF document text
- https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/db05ca54a7ec0c454ca977ec30579e7a/7032350844.pdfIn PDF document text
- http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b44f09bbe---5867755701.pdfIn PDF document text
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16099b93428fe4---79933237445.pdfIn PDF document text
- http://uk-finansist.ru/userfiles/file/95138747632.pdfIn PDF document text
- http://rasciindia.com/firetech/ckupload/files/60501136569.pdfIn PDF document text
- https://lasvegasrebath.com/wp-content/plugins/super-forms/uploads/php/files/e96f252454c5f681c5f03cad995e0fb9/xowokefumemigijijumozu.pdfIn PDF document text
- http://normel.org/files/upload/file/luguroraragu.pdfIn PDF document text
- http://sjhtractor.com/d/files/menofidom.pdfIn PDF document text
- https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/525316363ebb3523723d3c151cc07fe2/51061445750.pdfIn PDF document text
- http://mdsalon.ru/img/lib/file/43748216227.pdfIn PDF document text
- http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160acf07a49fb7---2197117165.pdfIn PDF document text
- http://digimaap.com/wp-content/plugins/super-forms/uploads/php/files/f66gj93ep52uvggjjt41ni0dus/71600195563.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/mv2sei2j43ef9k955idtlr4hd9/18354761008.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=simple+past+vs+past+continuous+worksheetsPDF 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_off0000dfb7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFB7 | 18020 bytes |
SHA-256: 59c1362ba9b8e5c6a7365456af02f390675e720c473aeab220e3c082d48850ce |
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font_01_sfnt_off00010e80.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E80 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012697.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12697 | 11060 bytes |
SHA-256: 1fd0c290074fe538d79591724d5e20b2aa308c940b46df923986b29b125af47c |
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