MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, indicating an attempt to redirect the user to malicious websites. The heuristic 'SE_CALLBACK_LURE' suggests a phishing or scam context, likely aiming to trick users into visiting a URL disguised as a document converter. The ML classifier and ClamAV detection strongly support the malicious nature of this file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
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://synerhu.ru/uplcv?utm_term=word+to+pdf+converter+best+quality PDF link annotation
- http://geo-equipe.it/userfiles/files/18400525919.pdfIn PDF document text
- https://mimpisiluman.com/contents/files/ruwita.pdfIn PDF document text
- http://altadirezione-consulting.it/userfiles/files/53787991320.pdfIn PDF document text
- http://linklandhotels.com/upfile/editor/files/76426622764.pdfIn PDF document text
- http://mlead.net/images/e/file/zirukaraj.pdfIn PDF document text
- http://sllight.ru/design/img/upload/file/85144058336.pdfIn PDF document text
- https://vidaleve.ind.br/ckfinder/userfiles/files/49643105866.pdfIn PDF document text
- http://afro-safari.com/upload/files/woxanemodalutafimazujanim.pdfIn PDF document text
- https://sfasg.jp/js/ckfinder/userfiles/files/93678122254.pdfIn PDF document text
- http://milwaukee.center/userfiles/file/49706585213.pdfIn PDF document text
- http://businessnavigator.in/ckeditor/uploads/files/69879154404.pdfIn PDF document text
- https://sooryasales.com/uploads/file/ganijuguwutululunuw.pdfIn PDF document text
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/e3d5012976434ed79f39273b4561f9d3/lesesa.pdfIn PDF document text
- http://hftyby.com/upload_fck/file/2021-9-24/20210924033243688053.pdfIn PDF document text
- http://t-cso.com/upload/file_folder/file/68683607283.pdfIn PDF document text
- https://receptabc.hu/images_banner/files/wavejorutesumuresete.pdfIn PDF document text
- https://butagallery.com/userfiles/files/29341083619.pdfIn PDF document text
- http://gldbirdgel.com/user_img/files/polumufirelikamed.pdfIn PDF document text
- http://mackits.eu/image/lefupixexoletagupi.pdfIn PDF document text
- https://felicitareonline.ro/ckfinder/userfiles/files/jusuromofurenururexasegew.pdfIn PDF document text
- http://btfa.tw/upload/files/63548309988.pdfIn PDF document text
- http://sedaciesupravy.sk/media/file/vuvasikasigeviwejin.pdfIn PDF document text
- https://malabarmail.com/ckfinder/userfiles/files/vonev.pdfIn PDF document text
- https://sentralperdana.com/file/gadawolagosowomomim.pdfIn PDF document text
- http://ajivikafinance.com/userfiles/file/19041383689.pdfIn PDF document text
- http://yuanhebiotech.com/upload/files/16043390195.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_off0000c5b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5B4 | 16968 bytes |
SHA-256: 4b39fdc42215b75ed7a97fa745533765e9b637908cc51335abf8e0bb19341bed |
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font_01_sfnt_off0000f182.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF182 | 11172 bytes |
SHA-256: 6778f010f6b2abeba54939d0acfa35604060fc748bfeebc52c3dd912409ab299 |
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font_02_sfnt_off00010b61.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B61 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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