MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, suggesting it's designed to redirect users to malicious sites or download further payloads. The 'SE_CALLBACK_LURE' heuristic strongly indicates a callback phishing attempt, where the user is prompted to call a number. The ML classifier and ClamAV detection further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 7
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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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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://kaizousha.com/js/upload/files/74573111356.pdf In PDF document text
- http://donghozibistore.com/luutru/files/xowaxuzuruteledezedazegi.pdfIn PDF document text
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133255d52a70---jifuxop.pdfIn PDF document text
- http://garant-fond.ru/ckeditor/ckfinder/userfiles/Images/files/kopafabelibuba.pdfIn PDF document text
- https://sportnazona.bg/f/uploads/files/ridaf.pdfIn PDF document text
- https://mygrind.ie/userfiles/file/wumomasetunaxogap.pdfIn PDF document text
- http://ventss.ru/userfiles/files/33744819539.pdfIn PDF document text
- http://silver.jo/ckfinder/blanc/files/jukexitexikibafajopa.pdfIn PDF document text
- http://vibrobreaker.com/files/files/mebixafebasoxixukasi.pdfIn PDF document text
- http://evpltravel.com/xv_image/file/dubukaz.pdfIn PDF document text
- http://quatangsongvan.com/hinhanh_fckeditor/file/xiwomogasusaji.pdfIn PDF document text
- http://ellenia3.eu/userfiles/files/zotuwuli.pdfIn PDF document text
- https://mangallagn.com/images/file/40671696422.pdfIn PDF document text
- http://mazurubezpieczenia.pl/zdjecia/fck/file/xaresivafufig.pdfIn PDF document text
- https://questyme.com/userfiles/file/81678974192.pdfIn PDF document text
- http://sh-ruiyangcpa.com/userfiles/file/2021-9///202197200288954.pdfIn PDF document text
- https://pontus-sd.eu/uploads/file/72029213450.pdfIn PDF document text
- http://saaretravel.ee/images/file/47674590158.pdfIn PDF document text
- http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613cda17ddc6e---fodonebuw.pdfIn PDF document text
- http://travel-door.com/userfiles/file/ruxibogibow.pdfIn PDF document text
- https://aczv.fr/userfiles/file/8856326413.pdfIn PDF document text
- http://traiteurluc.com/userfiles/file/65039104097.pdfIn PDF document text
- http://gzwep.com/img/file/20219114119.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=speed+post+tracking+number+gujaratPDF 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_off0000c1b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1B8 | 11348 bytes |
SHA-256: f08e0002a4b6582f8155ab8ffec062fcdf0961e3a89af12e6b8bb52c6f1f4034 |
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font_01_sfnt_off0000dbf3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBF3 | 16296 bytes |
SHA-256: aff9c05c4b6a410128afb02945a4d09a11953cd6822421951e472a7da70f3eb2 |
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font_02_sfnt_off00010600.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10600 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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