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 malicious PDFs. It also contains numerous external URIs, many of which point to compromised websites or disposable hosting, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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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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 http://vigova.vn/Images_upload/files/57134848268.pdf In PDF document text
- https://asesoriagade.com/app/webroot/files/files/65834261338.pdfIn PDF document text
- https://amursvoidom.ru/media/files/84467234824.pdfIn PDF document text
- http://victoryelectricalsupply.com/ckfinder/userfiles/files/48652157267.pdfIn PDF document text
- http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613937ded0d29---97766026478.pdfIn PDF document text
- http://gz-theoutfit.com/UploadFiles/FCKeditor/20210902085015.pdfIn PDF document text
- http://albarossa.jp/js/upload/files/93839156936.pdfIn PDF document text
- http://hizirferforje.com/admin/fckeditor/editor/images/file/53191243311.pdfIn PDF document text
- http://dfwsedan.com/nbloom/fckuploads/file/nivumunozavesod.pdfIn PDF document text
- http://kccmaul.com/files/files/roxixitudeluti.pdfIn PDF document text
- https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/cfca6593d2c209a019af98c6bec1bb38/zibubuda.pdfIn PDF document text
- http://sherwoodchambergolf.org/ckfinder/userfiles/files/17523554697.pdfIn PDF document text
- http://elai.kz/upload/2021/09files/210910011622090197vbubb.pdfIn PDF document text
- http://homeopathyhongkong.cn/files/gezodoxuboxofiduraxoxud.pdfIn PDF document text
- http://uleshuzatshop.hu/files/file/mesokizaxepokufotinoluji.pdfIn PDF document text
- http://sergeisurzhin.ru/ckfinder/userfiles/files/3476739188.pdfIn PDF document text
- http://wsystem.sk/userfiles/files/susavi.pdfIn PDF document text
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/mcv8m8o1vkphgqqo6n7s1hmqq5/37620808664.pdfIn PDF document text
- http://chia4kids.ru/ckfinder/userfiles/files/84943400611.pdfIn PDF document text
- http://budapesticukraszdak.hu/userfiles/files/wijivo.pdfIn PDF document text
- http://sintniklaas.kinderopvangpimpeloentje.be/ckfinder/userfiles/files/4510569056.pdfIn PDF document text
- https://mk-sito.it/uploads/file/lubari.pdfIn PDF document text
- https://asiquim.com/ckfinder/userfiles/files/5476188426.pdfIn PDF document text
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16139211574afe---wotodepomejezexugebuledaf.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=aplikasi+combine+fotoPDF 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_off0000dd4a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD4A | 10752 bytes |
SHA-256: 473ce635b6f68c273862425751a5400a72e6440715e1294e4fedd9659d45c1f3 |
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font_01_sfnt_off0000f5d7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5D7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010de9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DE9 | 18088 bytes |
SHA-256: 8b6cbefe9dee2505175475a636f9343c09734184f0da3ce0fc108a0628047e93 |
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