MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as a malicious PDF by ML classifiers and ClamAV, indicating a phishing or trojan distribution attempt. The PDF acts as a link farm, hosting numerous links to other PDF files, likely to obscure the ultimate malicious destination and evade initial detection. The heuristic 'SE_CALLBACK_LURE' suggests a potential callback phishing or tech-support scam pretext, aiming to trick users into interacting further.
Machine Learning
- Nyx PDF Classifier malicious score 0.9905
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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=langston+hughes+theme+for+english+b PDF link annotation
- http://ruihuitax.com/files/file/danuvunabo.pdfIn PDF document text
- http://jiehuist.com/userfiles/files/surebokudopomaxagesumi.pdfIn PDF document text
- https://cjsc.se/ckfinder/userfiles/files/94592547927.pdfIn PDF document text
- https://china-glass-mosaic.vegner.com/userfiles/files/20210913_051937.pdfIn PDF document text
- http://iglozawiercie.pl/zdjecia/file/kokodedababosi.pdfIn PDF document text
- http://galerie45.com/userfiles/file/tamepureranimizugigoturig.pdfIn PDF document text
- https://avistravel.ro/userfiles/file/3196181154.pdfIn PDF document text
- http://anm-av.de/uploads/files/24740460045.pdfIn PDF document text
- http://gutachterbewertung.de/userfiles/file/puvopetuxixezewejanugud.pdfIn PDF document text
- http://www.mousumibanerjee.com/fckimages/file/64465184726.pdfIn PDF document text
- https://gastrotest.co/ckfinder/userfiles/files/33393587964.pdfIn PDF document text
- http://huspanda.com/data/ckfinder/files/57277085420.pdfIn PDF document text
- https://noddy.nu/images/file/biwipususino.pdfIn PDF document text
- https://jhservice.net/imagenes/galeria/files/31274078674.pdfIn PDF document text
- https://windfreeklima.com/upload/ckfinder/files/nenepujorekufezokobodov.pdfIn PDF document text
- http://agama-rc.com/upload/files/1156696718.pdfIn PDF document text
- http://www.madiran-cruduparadis.fr/ckfinder/userfiles/files/15849321982.pdfIn PDF document text
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/973a0a0b7b80b7ed0ae36e6e56841d8b/rotowabibirajofukuli.pdfIn PDF document text
- http://concilianavarra.com/userfiles/files/11156559375.pdfIn PDF document text
- http://senvietsystem.com/ckeditor/upload/files/3752562455.pdfIn PDF document text
- http://olech-rzeszow.pl/userfiles/file/milidodox.pdfIn PDF document text
- http://signexpowholesale.com/project-new/christianbook/upload_images/file/simazunumulonisud.pdfIn PDF document text
- http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/4154d78fa7085558c68db3c97c179883/75232852559.pdfIn PDF document text
- https://tkbhanna.com/ckfinder/userfiles/files/84791426704.pdfIn PDF document text
- http://brlairport.com/images/file/24926031677.pdfIn PDF document text
- https://epgeptech.hu/ckfinder/userfiles/files/26123725822.pdfIn PDF document text
- https://cakamuzejs.riga.lv/ckfinder/userfiles/files/44767021691.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_off0000f026.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF026 | 18384 bytes |
SHA-256: d925ecbfb50f48c0eeecd42ece69f50e7e99b915869b298145c3547fcc3a7896 |
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font_01_sfnt_off00011f2d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F2D | 10860 bytes |
SHA-256: fba55f2c91cb7a0166c15cd71a112547cd67bc83171c2fc6bc9c09c92cbedf6a |
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font_02_sfnt_off00013809.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13809 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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