MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on suspicious domains and appear to be part of a link farm. The 'SE_CALLBACK_LURE' heuristic strongly indicates a callback phishing or tech-support scam attempt, where the user is prompted to call a phone number. The ML classifier and ClamAV detection further support the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://odnoklassniki-files.ru/images/uploads/files/verodujolazufatijakape.pdf In PDF document text
- http://badischer-kunstverein.de/ckfinder/userfiles/files/tewufuwimomogajafowu.pdfIn PDF document text
- https://thietkeweblongan.com/upload/files/waxajelomo.pdfIn PDF document text
- http://santiagoporter.com/js/ckfinder/core/connector/php/files/13516784313.pdfIn PDF document text
- http://studiotecnicostradi.eu/userfiles/files/naxuwutifoxineb.pdfIn PDF document text
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143a9fd1a768---lovoxozator.pdfIn PDF document text
- http://espaciocultivarte.com/ckfinder/userfiles/files/nixudiguzagome.pdfIn PDF document text
- http://hyundainhapkhau.net/upload/files/44123373978.pdfIn PDF document text
- https://detskeihriska.eu/ckfinder/userfiles/files/52605352288.pdfIn PDF document text
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/161425c6423bea---ritoxilazurudo.pdfIn PDF document text
- https://ikima.fr/uploads/file/xijokax.pdfIn PDF document text
- http://mea-travel.pl/userfiles/file/sebagidiguwawegefuvoz.pdfIn PDF document text
- http://bfcy88.com/uploads/files/jupovovod.pdfIn PDF document text
- http://metabolit-plus.ru/files/file/josibuvek.pdfIn PDF document text
- http://aa-nusd.jp/10443054883.pdfIn PDF document text
- http://daiduongmetal.com/uploads/ckfinder/files/gaguvebozixamatube.pdfIn PDF document text
- https://delaneyllc.com/ckfinder/userfiles/files/25641954471.pdfIn PDF document text
- http://www.tiande-global.com/ckfinder/userfiles/files/tovewizasuloxiba.pdfIn PDF document text
- http://contactfm.be/userfiles/files/suvomanikubin.pdfIn PDF document text
- https://pass-eco-energies.com/ckfinder/userfiles/files/77158537952.pdfIn PDF document text
- https://enkaotomatikkapi.com/depo/sayfaresim/file/68227574350.pdfIn PDF document text
- https://littleitalypizzany.com/nbloom/fckuploads/file/difenon.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=how+to+import+gmail+contacts+to+android+phonePDF 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_off0000ddaa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDAA | 11036 bytes |
SHA-256: 356476d71de33bd66c77b335ea32f91be7a99b79f06351af2762be50c68b73f3 |
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font_01_sfnt_off0000f6fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6FB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010f0d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F0D | 17944 bytes |
SHA-256: 89723e1a720f657aa23ae07feca4fc0bff898b6daa61483cc41fdc6d13d576bf |
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