MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, indicating malicious intent. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing or tech-support scam pattern, where the user is prompted to call a number. The ML classifier and ClamAV detection further support the malicious verdict. The document body was unreadable, but the heuristics and URLs point to a phishing attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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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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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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://wastran.ru/uplcv?utm_term=how+to+set+ringtone+on+motorola+android PDF link annotation
- http://mfcpavpos.ru/file/49153584092.pdfIn PDF document text
- http://bandenplaats.nl/cmsimages/file/22837714657.pdfIn PDF document text
- http://www.greenfield-sustainability.com/images/files/tekogoz.pdfIn PDF document text
- https://designmaster.in/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/dovegoxejabegipanu.pdfIn PDF document text
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134656cadd32---muletosomugu.pdfIn PDF document text
- http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16132bb792c667---gemevegawulojipimesiniwux.pdfIn PDF document text
- https://dpengineerindia.com/admin/userfiles/file/zonowufudejovig.pdfIn PDF document text
- https://atputasbazes.lv/images/userfiles/files/83126056038.pdfIn PDF document text
- http://fractinvest.com/uploads/file/5123253392.pdfIn PDF document text
- http://delve-cr.com/uploads/watukaj.pdfIn PDF document text
- http://seyrimerdin.com/userfiles/file/runipodafetiwexokub.pdfIn PDF document text
- http://dangkykinhdoanhkiengiang.com/upload/ck/files/tajiv.pdfIn PDF document text
- http://residencecarlofelice.com/userfiles/files/7690745140.pdfIn PDF document text
- https://pmcp-avac.com/files/upload-ckfinder/files/pifelatur.pdfIn PDF document text
- http://faithleader.org/js/ckfinder/userfiles/files/21263062980.pdfIn PDF document text
- http://softwarefactory.nl/images/file/buvatufikojufe.pdfIn PDF document text
- http://myapartment.de/web/editor/files/378927209.pdfIn PDF document text
- http://boras-sjuharad.boj.se/uploads/userfiles/files/76251719798.pdfIn PDF document text
- http://ifaistos.reality.gr/~triantaf/images/file/bilexagixagavukexazizonej.pdfIn PDF document text
- http://datev.hu/ckfinder/userfiles/files/wafalesojusiro.pdfIn PDF document text
- https://movimientofamiliadejesus.com/images/uploaded/file/zipizodobuxidul.pdfIn PDF document text
- http://www.de.ruben.pl/ckfinder/userfiles/files/50530105594.pdfIn PDF document text
- http://www.instalacionescueto.com/nueva/ckfinder/userfiles/files/29225600046.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_off0000d229.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD229 | 10668 bytes |
SHA-256: 725bfb9ff26a8e4105c74fddda67d813b193432161f891fd28da2839bcb4cb1e |
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font_01_sfnt_off0000ea63.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA63 | 17808 bytes |
SHA-256: c0fc33fa57a4fd83799fdb90918da2104097d5675cb8fc9cdbd22751dd31f387 |
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font_02_sfnt_off00011902.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11902 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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