MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's content is designed to trick users into installing software, a common social engineering tactic. Several URLs were extracted, some pointing to compromised WordPress sites, suggesting a distribution mechanism for malicious content. No scripts were extracted, but the PDF structure and heuristics point towards a phishing or malware delivery attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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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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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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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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://litho-and-co.fr/ckeditor/upload/files/24563395353.pdf
- https://coherence.cz/userfiles/file/54638794967.pdf
- https://smartmedia.ro/app/webroot/files/userfiles/files/5499537698.pdf
- https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614196bacdd1d---dirapuz.pdf
- http://avvocatoandreabruschi.it/userfiles/files/sutowadaxalisul.pdf
- http://lauraestetica.com/userfiles/files/ruxoxasixiwarulovum.pdf
- https://guptajimarriagebureau.com/userfiles/file/dorerebezujalo.pdf
- https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/305a12007809cfc0f3d9b1a623a63cfa/jaxijapasusagijefigise.pdf
- http://thestarbusan.com/FileData/ckfinder/files/20210917_C7D48EF38329F8D7.pdf
- https://stayinbranson.com/ckfinder/triplebuserfiles/file/87557086001.pdf
- https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/bl7mav6vporomorsouuagmnmlq/rixofelogunasubuvatit.pdf
- https://burragebrothers.com/demo/jolie/beta/userfiles/files/83887869254.pdf
- http://busangh.com/attfile/fckimg/file///2021090121336_967840915.pdf
- http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161305a18a818b---vilasekofuzip.pdf
- http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/16145a430e8f0a---61787822070.pdf
- http://tecs4.com/intranet/ckfinder/userfiles/files/tilirufibepimewebejubalu.pdf
- http://jessie.vn/images/ckeditor/files/77640600729.pdf
- http://bacsiha.com/public/ckfinder/userfiles/files/patimejowobudububas.pdf
- http://se-ty.com/uploads/userfiles/file/59941976600.pdf
- http://tubesealer.com/uploaded/file/6659862796146cf743836f.pdf
- http://sanarina.de/ckfinder/userfiles/files/xubis.pdf
- https://foodexgida.com/uploads/files/68438575046.pdf
- http://goozzl.com/userfiles/files/74825738760.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=sd+streamz+apk
- 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_off0000efe4.bin3e38ea3b9007cf5ce984d6ed3ff567e92497f64dd9bd6f8140d79b6af5242ecb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFE4 | 18752 bytes |
font_01_sfnt_off00012112.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12112 | 16792 bytes |
font_02_sfnt_off00013929.bind0082be708d14c84cab4d4d9385e02e3c599fbfa63871c439560312c3cf03d9b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13929 | 10416 bytes |
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