MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous external links, many of which point to compromised websites or disposable hosting, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malicious redirection attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://middletonchambers.com/ckfinder/userfiles/files/9586416931.pdf
- https://tamphuctriland.vn/upload/files/xifamozaz.pdf
- http://www.galiantsolutions.com/emailimages/file/pexugoledudakubujugula.pdf
- https://callmarkinvestments.fortunekenya.com/callmark/files/26045479989.pdf
- https://www.abandassociates.com/ckfinder/userfiles/files/lesipazuj.pdf
- http://toanthinh.vn/webroot/img/files/51845778169.pdf
- https://beeshark.ro/app/webroot/files/userfiles/files/sivemirujidotad.pdf
- http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/161378b1d9c194---50589518459.pdf
- http://xn--80aiddhbkcq5bcaz.xn--p1ai/upload/files/fepolenifosusig.pdf
- http://pokebarslo.com/uploads/files/sivamefevonenilufifojuve.pdf
- http://about-dogs.ru/upload/file/rovigoju.pdf
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef57980ea3---bijabamojatupobogif.pdf
- http://www.como-grup.ro/fisiere/file/67811699641.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613273f70c1ff---68279608622.pdf
- http://primethailand.com/ckfinder/userfiles/files/74175535236.pdf
- http://prunay-en-yvelines.fr/ckfinder/userfiles/files/65342718967.pdf
- https://www.bbmnetlicitacoes.com.br/cms/ckfinder/upload/files/99790364076.pdf
- https://somos.co/dleyes/admin/fotos/file/46723031811.pdf
- http://montex.pro/uploads/userfiles/file/repivupitul.pdf
- http://wsospice.org/uploads/userfiles/file/file/vagijadamozis.pdf
- http://gamjagolla.com/uploads/files/fatun.pdf
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f646b83a39---xemukis.pdf
- https://interior-mark.com/ckfinder/userfiles/files/81099180215.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=android+application+battery+usage+monitor
- 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_off0000d651.binbf3e0ba0950a4048529ec2bc71caebb4bb7fcba2ea947b303b84f2b3b5e937eb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD651 | 11192 bytes |
font_01_sfnt_off0000f014.bin5a059f602f69c0adedd510146e94264fbda9339889e949f14f9d45b07ae4ebcd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF014 | 17956 bytes |
font_02_sfnt_off00011edd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EDD | 16792 bytes |
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