MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document identified as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and numerous links to external PDFs, many hosted on disposable domains, suggesting a phishing or malware distribution attempt. The PDF_RANDOM_URL_LINK heuristic indicates a high likelihood of malicious intent, likely to download a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 7
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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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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://italvaping.com/file/76456172356.pdf
- http://www.jacenter.org/js/ckfinder/userfiles/files/vubifakak.pdf
- http://av-jet.ru/userfiles/file/fodejowutegojosof.pdf
- http://tongkhomica.com/upload/files/93817352011.pdf
- http://jszl-rolls.com/filespath/files/20210906115510.pdf
- http://media-production.net/admin/ckfinder/userfiles/files/nigibofezi.pdf
- https://stiglic.sk/userfiles/file/komidu.pdf
- http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16137660bc9b0f---sezipateromomuwa.pdf
- http://capitaloffice.pl/fotki/file/41277369370.pdf
- http://topflexsports.com/uploads/33972574471.pdf
- http://salamino.pl/userfiles/file/pikelusadijis.pdf
- http://yibetter.com/data/files/pavusefizofeveliwo.pdf
- https://yumasri.com/assets/ckfinder/userfiles/files/5475973347.pdf
- http://ambulatorioveterinariobubiniregini.eu/userfiles/files/64680237892.pdf
- https://seikai.jp/free_images/files/kobezezonozutok.pdf
- http://thepokeluau.com/uploads/files/pimozebebeb.pdf
- https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/5eea505ef184770e066c241cef83c081/bepefokozeparu.pdf
- http://ettorebelfioreliutaio.it/userfiles/files/21902283782.pdf
- http://hp-cnc.de/uploads/files/7334339092.pdf
- http://studiobardinisrl.com/userfiles/files/34243702186.pdf
- http://www.gulbaharsigorta.com/contentData/file/62379562936.pdf
- https://electrodomesticaruano.com/images/ckfinder/files/muwikibasuzav.pdf
- http://badischer-kunstverein.de/ckfinder/userfiles/files/nesebanu.pdf
- https://egokituz.eus/files/galeria/files/tuzixopamomip.pdf
- https://saint-florentin.charcutier-traiteur.fr/ckfinder/userfiles/files/47225380905.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=kingsman+full+movie+online+watch
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f9d5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9D5 | 16792 bytes |
font_01_sfnt_off000111ec.bin9bef425076e1b15732efcedeccc76292c3dee84ac00c9fb23a1c986c9b7adee9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111EC | 10924 bytes |
font_02_sfnt_off00012b1f.bin3d086a81195141998daf8e43605a46fa0afac0cf75ef9614217671b10f864dd8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B1F | 17596 bytes |
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