MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a large number of external URIs, many of which are part of a link farm hosted on disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for exploiting PDF vulnerabilities or redirecting users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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 https://crewmak.ru/uplcv?utm_term=compare+text+files+using+notepad%2B%2B PDF link annotation
- http://autodilykanka.cz/cmsimple/images/file/66905487027.pdfIn PDF document text
- https://receptabc.hu/images_banner/files/97682791359.pdfIn PDF document text
- https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/161395edd86ed9---84591852100.pdfIn PDF document text
- http://barsugo.com/ckfinder/userfiles/files/verijixezu.pdfIn PDF document text
- http://flirtproducties.nl/ckfinder/userfiles/files/nemunuvalabusepegalugi.pdfIn PDF document text
- https://pmms-online.com/assets/file/pilifijiruwukifizino.pdfIn PDF document text
- http://www.aaar.cat/assets/js/ckfinder/userfiles/files/sopikinosadelumado.pdfIn PDF document text
- https://dbmotorbrokers.com/userfiles/file/goduwedowutizoruk.pdfIn PDF document text
- https://kimcert.net/E/file/75823249556.pdfIn PDF document text
- https://www.fibertech1.com/my_content/js/ckfinder/userfiles/files/sofatavag.pdfIn PDF document text
- http://hodori247.com/uploads/files/biluniv.pdfIn PDF document text
- https://tagoproperties.com/ckfinder/userfiles/files/13533943665.pdfIn PDF document text
- http://saigondome.com/uploads/userfiles/file/63707552785.pdfIn PDF document text
- http://nitexprofi.cz/userfiles/file/wuneripuvaperowerel.pdfIn PDF document text
- http://jinanxintiandi.com/userfiles/files/22623010412.pdfIn PDF document text
- http://herborgthailand.com/file_media/file_image/file/lekekewokebovenidux.pdfIn PDF document text
- http://fotografoenricogiampieri.it/userfiles/files/92991693858.pdfIn PDF document text
- https://www.almuhja.com/ckfinder/userfiles/files/zagawe.pdfIn PDF document text
- http://bortran.com/upload/image/file/20210919064913.pdfIn PDF document text
- https://merohamro.com/ckfinder/userfiles/files/41165913433.pdfIn PDF document text
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612f6d095360a---72165337184.pdfIn PDF document text
- http://expertsystemgroup.com/file_media/file_image/file/20180669288.pdfIn PDF document text
- 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_off0000e0b9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0B9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f8cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8CB | 18636 bytes |
SHA-256: 3c4078e7db55a41d7179bacd5f72631fbeb008b93647e534010541b76784df6d |
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font_02_sfnt_off000128d7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x128D7 | 11072 bytes |
SHA-256: c119fd280234be3c83065200ac922c4792ca2962d937d5db055dcc41234fffe1 |
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