MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded JavaScript and numerous external URIs pointing to disposable hosting, indicative of a link farm used for phishing or malware distribution. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests a common tactic of providing password instructions to bypass gateway scanning, further supporting a malicious intent. ClamAV detection confirms the malicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://coretry.ru/uplcv?utm_term=square+root+of+216+simplified PDF link annotation
- http://iucecb.com/files/file/dogiwi.pdfIn PDF document text
- http://ctyrkolky-gamax.cz/data/dokumenty/42198047548.pdfIn PDF document text
- http://worldofpacifiers.com/editor_uploads/system/files/taxadolafaxanipaxo.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614112cca53cc---13156383902.pdfIn PDF document text
- https://haysalon.com/public_html/userfiles/file/3401411755.pdfIn PDF document text
- http://chinahongji.com/d/files/41588741057.pdfIn PDF document text
- http://triple-a.co.th/ckfinder/userfiles/files/14869057500.pdfIn PDF document text
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/mt93vk1lu5ja47tujhin3ks9o6/fezinogefulol.pdfIn PDF document text
- http://iranjobex.com/cache/fck_files/file/degigeduguxiresegiwefo.pdfIn PDF document text
- http://michael-dhom.com/webseiten/file/loxoxizumezatepez.pdfIn PDF document text
- http://safaraval.com/basefile/safaravalcom/files/46254254584.pdfIn PDF document text
- http://xn--80akoseq9f.xn--p1ai/userfiles/file/jitufexinijirefipe.pdfIn PDF document text
- https://genegurumiraclehealer.com/userfiles/file/vubekenafef.pdfIn PDF document text
- http://graylegalservices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/20083931981.pdfIn PDF document text
- https://www.scmsgroup.org/ckfinder/userfiles/files/belanedo.pdfIn PDF document text
- http://www.slenderclub.cz/ckfinder/userfiles/files/84992229348.pdfIn PDF document text
- https://i-chat.tw/js/ckfinder/userfiles/files/58066131012.pdfIn PDF document text
- http://shendaoguoji.com/data/attachment/file/tokebaperu.pdfIn PDF document text
- https://rent-1.es/ckfinder/userfiles/files/dopituxesa.pdfIn PDF document text
- https://cnn-logistics.com/asset/files/35587368829.pdfIn PDF document text
- https://www.sonorisation-auxerre.fr/ckfinder/userfiles/files/12182271190.pdfIn PDF document text
- https://hondamienbac.vn/userfiles/file/8924806048.pdfIn PDF document text
- http://budka39.ru/files/jirotujasamepufale.pdfIn PDF document text
- http://gayaarchi.com/userfiles/file/20210912030038.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_off00012a10.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A10 | 11216 bytes |
SHA-256: 19e2c611427bab8be33e54dff16463a924726204b288bc4e9bd71fdd13a58eed |
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font_01_sfnt_off0001443e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1443E | 19996 bytes |
SHA-256: 090c8cd3b1d3a53a726f0dd32b8d8ebd51078e58942ba32688bfaba3ae665c1f |
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font_02_sfnt_off00017825.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17825 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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