MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple external links, including one identified as an algorithmically-generated URL. The 'SE_INVOICE_LURE' heuristic suggests a phishing pretext. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites for further exploitation or credential harvesting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 8
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://inwebjor.ru/uplcv?utm_term=why+net+is+not+working+in+my+phone PDF link annotation
- http://www.ville-civaux.fr/admin/js/ckfinder/userfiles/files/11957578563.pdfIn PDF document text
- http://falerisztika.hu/tmp/75525280517.pdfIn PDF document text
- http://professionalcatererspaul.pageindia.com/resume/cms_files/files/6465816884.pdfIn PDF document text
- http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/42441119559.pdfIn PDF document text
- http://locum-system.pl/userfiles/file/vakupot.pdfIn PDF document text
- https://sheenabusesandcoaches.com/userfiles/file/kowebuvegofekugaxem.pdfIn PDF document text
- http://manisafar.com/basefile/marcosafarir/files/35092164481.pdfIn PDF document text
- http://rowadhr.com/app/webroot/upload/files/duxotavujojevunixelex.pdfIn PDF document text
- http://studiotecnicobergamaschi.it/userfiles/files/pefumobiri.pdfIn PDF document text
- https://digireg.lu/upload/60321735315.pdfIn PDF document text
- http://i-harmonics.com/upload/files/zurituxexuzox.pdfIn PDF document text
- http://www.farmaciapenil.es/userfiles/files/zupesinuxolugokofi.pdfIn PDF document text
- http://cn-polylysine.com/d/files/larovuwivoniwolexisodip.pdfIn PDF document text
- https://grupahatak.pl/admin/_fck_files/file/1791866550.pdfIn PDF document text
- http://citysoupsbellevue.com/uploads/files/47953229546.pdfIn PDF document text
- http://gnatowski.pl/attachments/file/24612921674.pdfIn PDF document text
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/16135ca193fb13---meripedater.pdfIn PDF document text
- https://campermagazine.tv/public/file/tujupemuzibukusowuvofusu.pdfIn PDF document text
- http://vitacanes.com/uploads/files/fodebutosunifi.pdfIn PDF document text
- https://minlinart.com/archive/upload/files/98542718505.pdfIn PDF document text
- http://bright-mineral.com/uploadfile/file/2021090504215027.pdfIn PDF document text
- http://eamenfaraz.com/cache/fck_files/file/34578591742.pdfIn PDF document text
- https://www.abandassociates.com/ckfinder/userfiles/files/kiguzidalefizuk.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_off0000b8f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB8F4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d106.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD106 | 15668 bytes |
SHA-256: 9e4f8dbe0fba4dde337f3f4885c1b5a7e802442ec2c4c49f63fd524099cdbc21 |
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font_02_sfnt_off0000f8cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8CB | 10776 bytes |
SHA-256: fb8dc9eb9bbda3d19a247e02526e6499d40fe9c1d119266c463beba722c897e4 |
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