MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also features a large number of external links, many pointing to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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.sport-konyv.hu/userfiles/file/6496613375.pdf In PDF document text
- http://medicaldistri.com/ckfinder_files/files/nuripudulelat.pdfIn PDF document text
- http://www.egavilanes.com/ckfinder/userfiles/files/fojudibomodaja.pdfIn PDF document text
- https://amigo-shop.105h.net/upload/files/4081386031.pdfIn PDF document text
- http://geonatlife.es/ckfinder/userfiles/files/sebemofomunadenow.pdfIn PDF document text
- http://gz-theoutfit.com/UploadFiles/FCKeditor/20210907231242.pdfIn PDF document text
- http://wildpflanzen-planung.de/file/lamivefikasozutawudumoxe.pdfIn PDF document text
- https://sabagdasarov.ru/upload/file/vuwagiravivoxejo.pdfIn PDF document text
- https://orsam.org.tr/paketler/ckfinder/dosyalar/files/47872807374.pdfIn PDF document text
- https://allora-tour.by/var/upload/file/52087324887.pdfIn PDF document text
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613f020abb68f---11250080551.pdfIn PDF document text
- http://dongphat.net/upload/files/jofofusu.pdfIn PDF document text
- http://nessium.fr/userfiles/file/87506986998.pdfIn PDF document text
- http://cabini.it/userfiles/files/34501495130.pdfIn PDF document text
- http://www.ernakulamarchdiocese.org/www/js/ckfinder/userfiles/files/vezibefoxepiwiwav.pdfIn PDF document text
- http://vanlysecurity.vn/vanly/album/files/74552795919.pdfIn PDF document text
- https://presentkompaniet.com/img/content/file/30539950729.pdfIn PDF document text
- https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/161369098aace7---wivap.pdfIn PDF document text
- http://younewstoday.com/task/userimages/file/10846428149.pdfIn PDF document text
- https://melnikhouse.com/userfiles/file/mevisas.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1616464bece106---35105664523.pdfIn PDF document text
- http://feedproxy.google.com/~r/MbOu/~3/23D8k0Ec_6w/uplcv?utm_term=unicode+to+string+onlinePDF 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_off0000e1b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1B0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f9c7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9C7 | 10392 bytes |
SHA-256: df2700bf04bc6e4d7e24994124ae9e5fff80590540cec69d9df2a2eb94d6703b |
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font_02_sfnt_off00011128.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11128 | 19704 bytes |
SHA-256: 50f96ff6713d5ca6b9a8698ae3ef8df72407a28530d6ffa8a092feaea5b5d17e |
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