MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple external URIs, with a high ML classifier score indicating malicious intent. The document body, though truncated, suggests a lure to install a browser extension or plugin, a common tactic for credential theft or malware delivery. The presence of embedded JS and numerous links points towards a downloader or exploit delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9929
Heuristics 7
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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://giasidaily.com/uploads/userfiles/file/fazawusosukas.pdf In PDF document text
- http://gamulchi.org/userfiles/file/mazeseroganubegutafepawok.pdfIn PDF document text
- http://stopguepes72.fr/userfiles/file/vutuzem.pdfIn PDF document text
- http://thaymanhinhlaptop.com/userfiles/file/80535308902.pdfIn PDF document text
- https://theptaynam.vn/upload/files/81342189921.pdfIn PDF document text
- http://4seasonstours.in/userfiles/file/51204681409.pdfIn PDF document text
- https://palet-school.com/files/files/nadopimufalinolex.pdfIn PDF document text
- https://santa.my/images/users/00000000/files/39097016533.pdfIn PDF document text
- http://upoart.com/ckfinder/userfiles/files/nidifatugazupadefasesoxik.pdfIn PDF document text
- http://asu78.ru/userfiles/file/72210228864.pdfIn PDF document text
- http://rdasesores.gestconcursal.com/editor/ckfinder/userfiles/files/73119666957.pdfIn PDF document text
- http://www.heksan.com.pl/file/zedolomexonalebetulado.pdfIn PDF document text
- http://wxmx.cn/upload/ckimg/files/202109271251044345.pdfIn PDF document text
- http://foxhill101.com/userimages/67635810442.pdfIn PDF document text
- https://ingatlansos.hu/images/userfiles/file/40293400441.pdfIn PDF document text
- https://sapsda.org/SapmaUserfiles/file/tajatawutuwudeg.pdfIn PDF document text
- https://lesrimaudieres.com/images/uploads/file/rurojenofebusuz.pdfIn PDF document text
- http://etnorom.hu/pictures/tolud.pdfIn PDF document text
- https://adminico.nl/userfiles/file/15333582039.pdfIn PDF document text
- http://farmina.ru/uploads/files/palurabozoxogamima.pdfIn PDF document text
- http://parejalecaros.com/adjunto/upload/fck/files/44456376923.pdfIn PDF document text
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161405af0e62d3---14447722491.pdfIn PDF document text
- http://mediasingrid.com/js/new/fckeditor/userfiles/file/22526964443.pdfIn PDF document text
- https://groupunsur4.com/contents/files/38329647071.pdfIn PDF document text
- https://feedproxy.google.com/~r/Gsjc/~3/23D8k0Ec_6w/uplcv?utm_term=henry%27s+law+constantPDF link annotation
- 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_off000121ee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121EE | 21096 bytes |
SHA-256: abdad656c84bf7572a76b91aee0693dec15101936adfdf68ad17bcd0c6c2986d |
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font_01_sfnt_off000159dd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x159DD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000171f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x171F4 | 10356 bytes |
SHA-256: 259e53946b7893f86a4d979c7c26d460ab6afa47f1ad233d7771c36a12438e5e |
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