MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is often used to redirect users to malicious sites or download further payloads. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed to host numerous links on disposable domains, strongly suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection further support the malicious nature of this file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://synerhu.ru/uplcv?utm_term=concept+of+dialectical+materialism PDF link annotation
- http://csc0898.com/userfiles/file/20211015200348_ggtd3t.pdfIn PDF document text
- http://dspec-car.com/js/upload/files/94728146386.pdfIn PDF document text
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/54ugsfro77bkj4prbsuk1rbsu5/dimefejijevejen.pdfIn PDF document text
- https://gedayapi.com/userfiles/file/tugomerufiv.pdfIn PDF document text
- http://vanharteyoga.nl/uploads/files/59121758386.pdfIn PDF document text
- http://www.octopus-quatuorvocal.com/ckfinder/userfiles/files/borugalupegadixusagisubax.pdfIn PDF document text
- https://tucarrorentacar.co/ckfinder/userfiles/files/gezive.pdfIn PDF document text
- http://russia-ex.com/images/blog/file/povesazena.pdfIn PDF document text
- https://icon-studios.com/userfiles/file/41118088821.pdfIn PDF document text
- http://peaceinsrilanka.lk/userfiles/file/67408501592.pdfIn PDF document text
- https://bellcera.60km.com/upload/files/10139442059.pdfIn PDF document text
- http://solarexperten.ch/fckeditor/editor/images/file/71359964976.pdfIn PDF document text
- http://xinyuemu.net/assets/202109/files/20210903210314487112.pdfIn PDF document text
- https://szallas-karpatalja.com/upload/bawudijuzux.pdfIn PDF document text
- http://creativecoms.net/userfiles/file/fevozuvoka.pdfIn PDF document text
- https://nichebearing.leaddeehub.com/userfiles/files/sizaperoba.pdfIn PDF document text
- http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161617c2606b2a---tezegok.pdfIn PDF document text
- https://kalendarz.probik.pl/fckeditor/userfiles/file/poxuratix.pdfIn PDF document text
- http://gallery4walls.com/upload/editer/file/dudikowutipiforuwosatijev.pdfIn PDF document text
- http://snieznik.pl/userfiles/file/vifojinuf.pdfIn PDF document text
- https://sklep-pinokio.pl/web/uploads/files/24745471646.pdfIn PDF document text
- http://curry-box-deluxe.de/userfiles/file/vagesovugijexopax.pdfIn PDF document text
- http://perilatomsk.ru/ckfinder/userfiles/files/47605983826.pdfIn PDF document text
- http://matrixpaint.com/ckfinder/userfiles/files/zamolatofobobitekuzopo.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_off00015f08.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15F08 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001771a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1771A | 21304 bytes |
SHA-256: 59f2c1458ce94e3dff95457d2cf7b1b8b8d3c712a9140637be77edc695e1d01f |
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font_02_sfnt_off0001aebb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1AEBB | 10812 bytes |
SHA-256: a8fb69991dc58eed9392dd5f0a111beec258376e23aa64339d021a28098029c6 |
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