MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URLs, with several heuristics indicating it functions as a link farm on disposable hosting. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for initiating malicious actions within PDFs.
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 https://infrive.ru/uplcv?utm_term=biological+psychology+james+kalat+pdf PDF link annotation
- https://hoavily.com/uploads/files/gilemokawodubizotuvik.pdfIn PDF document text
- http://oldstat.ww.tj/img/file/mejusekog.pdfIn PDF document text
- http://bigbazar.cz/is/images/FCKeditor/File/nijajasijodug.pdfIn PDF document text
- https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613d5dc449a61---tiduxu.pdfIn PDF document text
- https://canevastoilestjean.com/upload/editor/file/85179454429.pdfIn PDF document text
- http://grgct.com/ckfinder/userfiles/files/28828009052.pdfIn PDF document text
- https://thietbigas.net/media/files/52793283663.pdfIn PDF document text
- http://kemenyseprosiklos.hu/upload/file/19464903732.pdfIn PDF document text
- http://ambulatorioveterinariobubiniregini.eu/userfiles/files/naxitopenas.pdfIn PDF document text
- http://www.jacenter.org/js/ckfinder/userfiles/files/7736457417.pdfIn PDF document text
- https://washlounge.in/ckfinder/userfiles/files/nitaker.pdfIn PDF document text
- http://aytekinpolatel.com/image/files/45587024518.pdfIn PDF document text
- https://lp-tracking.com/userfiles/file/vojife.pdfIn PDF document text
- http://zpkprzemysl.pl/ckfinder/userfiles/files/vokaxubojumawike.pdfIn PDF document text
- http://christmaslandint.com/userfiles/jenijukunibi.pdfIn PDF document text
- https://pikhospital.com/ck_uploads/uploads/files/fetuvasitesedok.pdfIn PDF document text
- http://cualuoiskydoor.com/webroot/img/files/kajafuxuravulufipogudib.pdfIn PDF document text
- http://zhongguohuachun.com/d/files/nepuripedesoxelovo.pdfIn PDF document text
- https://lacgl.org/upload/editor/file/71282945300.pdfIn PDF document text
- https://magic-ray.shop/uploads/files/39330605141.pdfIn PDF document text
- http://deltools.com/userfiles/file/28125022237.pdfIn PDF document text
- http://findusafranchise.com/files/files/nezaxaregizopitikikuwuti.pdfIn PDF document text
- https://nic-irq.com/userfiles/files/dovotumefebozuxe.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_off0000b216.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB216 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ca28.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA28 | 16368 bytes |
SHA-256: 52044db8a47f20e7c551223e65bcae5100cf029c46ac5db5a9cf07730e8fbc46 |
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font_02_sfnt_off0000f3cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3CB | 11252 bytes |
SHA-256: f6f96faad251401dd73d7fc4b75ee9d09c81222cdeb7ebb6813c1d579116077c |
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