MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and is flagged by ML classifiers as malicious. Heuristics indicate it acts as a lure for browser extension installation or recovery secret requests, a common social-engineering tactic. The presence of external URIs suggests it may download additional payloads or redirect to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9911
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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Recovery secret / private key request critical SE_SECRET_RECOVERY_LUREDocument requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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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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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 http://lncxjzxxw.com/upload_fck/file/2021-9-14/20210914072109129897.pdf In PDF document text
- http://kindergartenhelden.at/upload/file/rijek.pdfIn PDF document text
- http://globalnetworks.de/www.galabau-poscher.de/main/preview/ckfinder/userfiles/files/gunukose.pdfIn PDF document text
- https://strechybenesov.cz/content/37376062248.pdfIn PDF document text
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16133f12c1d712---jafejitu.pdfIn PDF document text
- https://grandplaza.bg/uploads/assets/file/51881570533.pdfIn PDF document text
- http://radio-salsa.fr/php/rs/filesupload/file/32991314702.pdfIn PDF document text
- http://xn--80aa5alfu.kz/file/9601592202.pdfIn PDF document text
- http://manu-transport.com/documents/file/31082773306.pdfIn PDF document text
- http://capitolmetrophysicaltherapy.com/userfiles/file/nolexowuzoleletakurimiza.pdfIn PDF document text
- http://labellebeaute.com.hk/ckfinder/userfiles/files/87259445665.pdfIn PDF document text
- http://odessawa.com/userfiles/file/17978575273.pdfIn PDF document text
- http://architects-desk.com/uploadsfile/58787055811.pdfIn PDF document text
- http://steelbo.com/uploads/admins/u0/files/20210902014631.pdfIn PDF document text
- https://jmcoverseaspvtltd.com/uploads/files/jimunivafemumi.pdfIn PDF document text
- http://collectifff.be/imgdb/accueil/files/refilagij.pdfIn PDF document text
- https://designsdubaiukfashion.com/userfiles/file/51572028830.pdfIn PDF document text
- http://tipsclubcr.com/campannas/file/75607972150.pdfIn PDF document text
- https://beta.nhatthiengroup.com/files/uploaded/files/jexivuxodivim.pdfIn PDF document text
- https://ijfbacknumber.com/editor_up/29582611868.pdfIn PDF document text
- http://location-appartement-venise.com/italie_documents/files/depinepezanavadurorijes.pdfIn PDF document text
- https://cpc-serbia.org/js/files/zelisabik.pdfIn PDF document text
- http://www.gleason.com.au/application/third_party/ckfinder/userfiles/files/zatisefodudekidoreb.pdfIn PDF document text
- http://betonkeritesek.eu/Content/files/ludafikosukiji.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=windows+10+update+to+2004PDF 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_off0001d40f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D40F | 10792 bytes |
SHA-256: f95836abccf78cad516910638dca91495be81d892d5dcaad7989cb2da4d4a319 |
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font_01_sfnt_off0001ed39.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1ED39 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0002054b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2054B | 18996 bytes |
SHA-256: abb72a71e370bbdc6f6056b578a07ded41bd979fe32430019f48029d5782fb29 |
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