MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or delivering malicious content. The PDF also contains numerous external URIs pointing to compromised websites, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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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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://huntic.ru/uplcv?utm_term=download+app+lock+download PDF link annotation
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b0d1856d10---58312973263.pdfIn PDF document text
- http://soupworld.de/upload/file/tavijelopofijejafifipuki.pdfIn PDF document text
- http://nousgarage.com/userfiles/file/difatakugom.pdfIn PDF document text
- https://nsck-cykelmotion.dk/ckfinder/userfiles/files/demiwowikerosexowa.pdfIn PDF document text
- https://aspirans.com/files/file/29975930909.pdfIn PDF document text
- http://geoplan.su/userfiles/file/karozi.pdfIn PDF document text
- http://www.park-seversk.ru/other/js/ckfinder/userfiles/files/zawowazurupogokiseza.pdfIn PDF document text
- http://cedule-plachty.cz/files/file/46110938513.pdfIn PDF document text
- http://exosportsante.fr/ckfinder/userfiles/files/pigejajorepavijun.pdfIn PDF document text
- http://www.biogreeno.com/cms/ckfinder/userfiles/files/nugekigavubagerolot.pdfIn PDF document text
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137b45f0c34a---61989718550.pdfIn PDF document text
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1613f068a80bcb---nokariwuv.pdfIn PDF document text
- http://flirtproducties.nl/ckfinder/userfiles/files/92421217898.pdfIn PDF document text
- http://3qlohas.com/CKEdit/upload/files/dokefexivop.pdfIn PDF document text
- http://coniperfumes.cl/js/ckfinder/userfiles/files/wetugomujizow.pdfIn PDF document text
- http://aunay-sous-auneau.fr/ckfinder/userfiles/files/92754885666.pdfIn PDF document text
- https://ecpa.fr/uploaded/file/89718464371.pdfIn PDF document text
- http://1carl.com/userfiles/file/xakugofopesurafezimul.pdfIn PDF document text
- https://sklep-pinokio.pl/web/uploads/files/xebogopurabimuvizobugob.pdfIn PDF document text
- https://infiniteprospects.com/FCKeditor/file/4324514188.pdfIn PDF document text
- http://murielbellhomes.com/userfiles/files/nomofixodubotefe.pdfIn PDF document text
- https://dragonexpressml.com/userfiles/files/75308798292.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_off0000d3be.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3BE | 17084 bytes |
SHA-256: 6b8f82c497ebb266dbcf5504d0a02907b3e9bb335d466225933ec346054a1750 |
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font_01_sfnt_off0000ff8f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF8F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000117a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117A6 | 10096 bytes |
SHA-256: 92078468aeb33cb9215a2c8f9d153c45dd7eac08a6e55ff53922784afc34bd45 |
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