MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which are disguised as file downloads. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into clicking malicious links or downloading further payloads.
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 https://laborke.ru/uplcv?utm_term=please+run+the+chkdsk+utility PDF link annotation
- https://bdblue.com/ckfinder/userfiles/files/19118640352.pdfIn PDF document text
- http://suvenirzp.com/uploads/files/riwupi.pdfIn PDF document text
- https://santa.sg/images/users/00000000/files/88979591247.pdfIn PDF document text
- http://tuderprogettazione.it/userfiles/files/kuselowobegufa.pdfIn PDF document text
- https://marlin-aquarium.ru/ckfinder/userfiles/files/41514007582.pdfIn PDF document text
- http://baoveantam.info/upload/files/wegerogev.pdfIn PDF document text
- http://cayxaotamphan.net/userfiles/image/file/lasutefoduwofavopo.pdfIn PDF document text
- http://automag.pl/userfiles/file/pewaretowagixipaxa.pdfIn PDF document text
- http://bobmeetin.com/media/galleries/files/97448252050.pdfIn PDF document text
- http://studiomarcheluzzo.it/userfiles/files/93353830997.pdfIn PDF document text
- https://sistemkabin.com/ckfinder/userfiles/files/gexirokimab.pdfIn PDF document text
- http://machinesupplier.cn/data/product/file/2021911_121053_803.pdfIn PDF document text
- https://stef-nancy.fr/upload/document/64747118971.pdfIn PDF document text
- https://get.belonnanotservice.ga/away?/wp-content/plugins/formcraft/file-upload/server/content/files/161513f2846d02---75217557510.pdfIn PDF document text
- http://srtcivilnorth.com/ckeditor_file/files/tetuxirijid.pdfIn PDF document text
- http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149917910795---mosesegamejevezilimolofi.pdfIn PDF document text
- http://patrick-jardinage.fr/ckfinder/userfiles/files/75645767392.pdfIn PDF document text
- https://jamurgoreng.net/contents/files/nilozuseno.pdfIn PDF document text
- http://wu-pao.com/upfiles/editor/files/40196595640.pdfIn PDF document text
- http://gamaxmotor.cz/data/dokumenty/kegemafeto.pdfIn PDF document text
- http://umffz21.ru/admin/ckfinder/userfiles/files/majufamujupibijive.pdfIn PDF document text
- http://w3-japan.com/js/upload/files/xuxedesozutopud.pdfIn PDF document text
- http://hit-air.pro/ckfinder/userfiles/files/93388637802.pdfIn PDF document text
- https://n-zvuk.ru/upload/file/wuzepofugewamagofopix.pdfIn PDF document text
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16131b9ebd65b6---14994848576.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_off0000d8fc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8FC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f10e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF10E | 18252 bytes |
SHA-256: 11bf114522169c21da70ed5739eebc2615b0437e40adf9a12e76bf3a0183d42a |
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font_02_sfnt_off00011fff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FFF | 10652 bytes |
SHA-256: 52bd9d5afe06c232ae1d01e9661e8d42ab14ab18312f1aefc4914eef1c8f2fb4 |
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