MALICIOUS
134
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 delivering malicious content. The PDF also exhibits characteristics of a link farm, directing users to multiple external URLs hosted on disposable domains, likely to obscure the ultimate malicious destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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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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://sbairs.com/datas/files/11721413607.pdf In PDF document text
- https://mongolia-volkslift.com/uploads/files/5901398550.pdfIn PDF document text
- https://bank-kredit.at/ckfinder/userfiles/files/kudepabojop.pdfIn PDF document text
- https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/gefibuxexu.pdfIn PDF document text
- https://dimensionshoppe.com/alpha/ckfinder/userfiles/files/mukese.pdfIn PDF document text
- https://vishalahospitality.com/ckfinder/userfiles/files/63358452492.pdfIn PDF document text
- https://fivetc.net/uploads/files/12349566071.pdfIn PDF document text
- http://suachuadienlanhhoaphat.com/hinhanh_fckeditor/file/bozitufiguwezunubezabe.pdfIn PDF document text
- http://ud2-140.com/files/49026346553.pdfIn PDF document text
- http://shinex-auto.com/userfiles/file/kafuresiratebevezu.pdfIn PDF document text
- http://louisefarmersmith.com/admin/ckeditor/ckfinder/userfiles/files/lofav.pdfIn PDF document text
- http://teakdeck.pl/files/file/35343636121.pdfIn PDF document text
- http://polletnv.be/uploads/files/72124789279.pdfIn PDF document text
- https://opsclown.it/ckfinder/userfiles/files/63311261196.pdfIn PDF document text
- http://lamardaegu.com/upfile/user/file/gobaremerubeguzazuwudewi.pdfIn PDF document text
- http://suurelepa.ee/data/file/2834490315.pdfIn PDF document text
- http://pololanna.com/user_img/files/21057146783.pdfIn PDF document text
- https://citronel.com/userfiles/files/jopenuvenivuvujalugasog.pdfIn PDF document text
- http://thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/nojeligodopewovotinawuxu.pdfIn PDF document text
- http://www.mediagrand.hu/data/editorfile/bedojesexiv.pdfIn PDF document text
- http://viettelhaiphong.me/data/dulieu/files/21127859616.pdfIn PDF document text
- https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16137e2af87969---bikukamuxukigokinuriverob.pdfIn PDF document text
- http://polenes.cl/userfiles/file/wizumodip.pdfIn PDF document text
- http://89928386.com/uploads/files/202109041050507586.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=wcb2+apk+downloadPDF 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_off0000b6b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB6B1 | 16784 bytes |
SHA-256: ca942c1678b43e8fefc03ef260b820e1be1e2d6c33f2e82e789fab2186a4ddef |
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font_01_sfnt_off0000e231.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE231 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fa48.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA48 | 10348 bytes |
SHA-256: c8b3902c49d297f252676fb96bd791fbd96da58a87256effb4faebd51d15fb0f |
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