MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites, which in turn host other PDF files. This suggests a link farm or redirection chain designed to obscure the ultimate malicious destination, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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 http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160d19b186f402---44527507975.pdf In PDF document text
- http://ahdongjiu.com/upload_fck/file/2021-5-1/20210501214804557242.pdfIn PDF document text
- https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/2jtdnubu6koqjdp4ipjc4ddcd2/waguzifixuwikap.pdfIn PDF document text
- http://akcjonariusz.com/UserFiles/file/74543547884.pdfIn PDF document text
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607665b168c03---93240979050.pdfIn PDF document text
- https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/ud1ngnaslrd3rhtf2gfqmv9i7v/majiwodokib.pdfIn PDF document text
- http://altinay-law.com/images/file/86959599139.pdfIn PDF document text
- http://aivieksteslaivas.lv/userfiles/file/78969327861.pdfIn PDF document text
- http://sva-jeanroze.com/xmedia/file/90897436818.pdfIn PDF document text
- https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160b010f456907---tipijelavesemaxirunuf.pdfIn PDF document text
- http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606d57e538f67---53428852484.pdfIn PDF document text
- https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160d4927ced9d1---gogejuxipum.pdfIn PDF document text
- http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b42b5014379---vurimozisolotiwabam.pdfIn PDF document text
- https://sofupingame.com/calisma2/files/uploads/39292365971.pdfIn PDF document text
- https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16082a8a1431be---35162963604.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=so+much+meaningPDF 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_off0000b69d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB69D | 16160 bytes |
SHA-256: 1357f5f83dfbef5687e1b714fa12f1df0a8389505e0f625790b1e14baa5b42f5 |
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font_01_sfnt_off0000e004.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE004 | 10440 bytes |
SHA-256: a2908eaa13c27143b052da217dd23ee68f22549552027294d0967154ea57a0e9 |
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font_02_sfnt_off0000f77e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF77E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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