MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript and multiple links to external PDF files hosted on various domains. The heuristic PDF_RANDOM_URL_LINK and PDF_SEO_DISPOSABLE_LINK_FARM indicate that these links are likely part of a malicious campaign. The embedded JavaScript and the nature of the linked files suggest an attempt to download and execute further malicious payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://werder-ritter.de/UserFiles/File/vuvabazafowaxag.pdf In PDF document text
- http://aorganboys.handyfriendship.com/upload/files/66418788990.pdfIn PDF document text
- http://trust-law-firm.com/userfiles/file/20210922172435_211844751.pdfIn PDF document text
- http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/88234858934.pdfIn PDF document text
- http://manpukuorder.com/uploads/files/3420739172.pdfIn PDF document text
- http://instalater-macecek.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/nalatokedu.pdfIn PDF document text
- https://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/vutejijegoguvexosena.pdfIn PDF document text
- https://xlquality.com/userfiles/file/vugeka.pdfIn PDF document text
- http://ambulatorioveterinariobubiniregini.eu/userfiles/files/literenunib.pdfIn PDF document text
- https://tselectromechanical.com/uploads/CKfiles/files/lixose.pdfIn PDF document text
- http://everbeenmagnet.com/js/upfiles/files/disodopu.pdfIn PDF document text
- https://volgogradexpo.ru/ckfinder/userfiles/files/5261445503.pdfIn PDF document text
- https://bhopalliteraturefestival.com/mpsdp/uploads/files/28273716055.pdfIn PDF document text
- http://klawiatury-foliowe.pl/_data/file/zugibirufoxujud.pdfIn PDF document text
- http://xageunion.com/userfiles/file/61078103176.pdfIn PDF document text
- https://gplacestracker.com/userfiles/file/zatotakividazotaf.pdfIn PDF document text
- http://aiswaryamatrimonials.com/fck_uploads/file/55719693439.pdfIn PDF document text
- http://morgancountyoh.com/userimages/popasuzuto.pdfIn PDF document text
- https://pacientes.quiroser.com/UserFilesQUI/file/kubagofesisukejujoxof.pdfIn PDF document text
- http://vsrru.ru/userfiles/file/73148229633.pdfIn PDF document text
- http://johnmarzillier.com/ckfinder/userfiles/files/xeledusakuposi.pdfIn PDF document text
- http://drdj.friend-match.com/upload/files/xesafo.pdfIn PDF document text
- http://aqbnb.com/uploadfile/file/lorofokunadenafazup.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=positive+and+negative+space+drawingsPDF 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_off0000b1c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB1C2 | 14836 bytes |
SHA-256: 2b38b52fe4e746f0f35894a696c2f2fdd39fcdb6eabdbdaae4ad1638d98b9366 |
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font_01_sfnt_off0000d719.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD719 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ef30.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF30 | 10796 bytes |
SHA-256: e54b01463715b747a9ad44558b1434d97b5c9dd1e2813d03a2127600b94a993a |
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