MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, with several heuristics indicating it functions as a link farm. Notably, some links point to compromised CMS upload directories, suggesting a potential distribution point for malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://akconta.com/uploads/files/bikavafewejumetewuga.pdf In PDF document text
- http://iscyber.com/userfiles/files/65838114909.pdfIn PDF document text
- http://salon-urody-bellis.pl/images/file/59278827340.pdfIn PDF document text
- https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/74b84e2085133cfc11dade3b68bdfbf9/11335115268.pdfIn PDF document text
- http://sun-eko.eu/files/file/saxakezib.pdfIn PDF document text
- https://hanahana.vn/media/ftp/file/rufeza.pdfIn PDF document text
- http://ximangsongthao.com/app/webroot/uploads/files/rufet.pdfIn PDF document text
- https://travellifeafrica.com/ci/userfiles/files/vesazovudozurijezek.pdfIn PDF document text
- https://oglethorpeclub.org/~oglethor/UserFiles/file/sojemawelukavaxuxam.pdfIn PDF document text
- http://ngocphuocjsc.com/public/default/ckeditor/files/4542651174.pdfIn PDF document text
- http://outspokenholland.com/userfiles/fckFile/20210807012754.pdfIn PDF document text
- https://cleaner.pl/userfiles/file/maparutesitutolepo.pdfIn PDF document text
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c62bd81391d---ketosetugemaxikusegiteb.pdfIn PDF document text
- https://ibrahimkoc.com/images/Media/files/81931487940.pdfIn PDF document text
- http://magooferta.pl/uploads/fck/file/lesezazovobomolo.pdfIn PDF document text
- http://helderlive.nl/ckfinder/userfiles/files/zaxedefemekixe.pdfIn PDF document text
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608a74b6b5a9d---46283852247.pdfIn PDF document text
- http://alltechsro.cz/files/36994635616.pdfIn PDF document text
- http://csc0451.com/userfiles/file/20210831112049_n72rwt.pdfIn PDF document text
- http://mwflower.com/upimagesfile///82675808542.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=margin+of+safety+seth+klarman+pdfPDF 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_off0000c875.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC875 | 11144 bytes |
SHA-256: 27de5b446cff9654dd89834168f211da1ec0fe4918a51c60933eb074dba5c5bf |
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font_01_sfnt_off0000e21a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE21A | 17792 bytes |
SHA-256: 3f84d873e4ca0deeddb8e22fff8b523015d393899f1db641c306bdc5b5f397d2 |
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font_02_sfnt_off0001106d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1106D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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