MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript and multiple external links, many of which point to other PDFs hosted on potentially disposable domains. The heuristic 'PDF_RANDOM_URL_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggest a malicious intent to distribute further malware or conduct phishing. The embedded JavaScript, while not fully analyzed due to potential obfuscation, is a common vector for exploiting PDF vulnerabilities or initiating malicious actions.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://www.hgekc.com/media/userfiles/file/retexipeja.pdf In PDF document text
- http://kiapelhrimov.cz/UserFiles/File/37879529603.pdfIn PDF document text
- https://queensflower.nl/clientfiles/bidipurijexujok.pdfIn PDF document text
- http://www.dagmarsvendova.cz/admin/js/ckfinder/userfiles/files/jodubovuba.pdfIn PDF document text
- http://beijingteye.com/upload/files/pojevurakusukukiwatuwid.pdfIn PDF document text
- https://vico-immobilien.com/ckfinder/userfiles/files/vosureduzedunigutazok.pdfIn PDF document text
- http://ambulatorioveterinariocigliano.com/userfiles/files/nokizusuxukubikuduz.pdfIn PDF document text
- https://worldmedglobal.com/userfiles/files/3864994022.pdfIn PDF document text
- https://nghiepvu.udicmanpower.vn/uploads/news_file/47141007166.pdfIn PDF document text
- http://abpjse.news-read.com/upload/files/29446401336.pdfIn PDF document text
- http://hart-metale.pl/gimnazjum/userfiles/file/pinoneso.pdfIn PDF document text
- http://chenruichem.com/upload/files/22985246575.pdfIn PDF document text
- http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613fa38fbd469---zimirikuvas.pdfIn PDF document text
- http://csc0532.com/userfiles/file/20210905212506_1u7o5a.pdfIn PDF document text
- http://happinessgown.com/upload/users/files/83901283074.pdfIn PDF document text
- https://gegeny.hu/uploads/file/wubovifasemi.pdfIn PDF document text
- http://pk.mo/userfiles/file/dazokufomesiveje.pdfIn PDF document text
- http://chupanhnoithat.vn/upload/files/deboraw.pdfIn PDF document text
- https://tvmreza.tv/ckfinder/userfiles/files/volid.pdfIn PDF document text
- https://planningpvedh.nl/ckfinder/userfiles/files/pijirozuzonudumi.pdfIn PDF document text
- https://quimicasorocolor.com.ve/ckfinder/userfiles/files/zakozifapazoxal.pdfIn PDF document text
- http://violetstudio.in/userfiles/file/zaseka.pdfIn PDF document text
- http://studiocastigli.eu/userfiles/files/64355854176.pdfIn PDF document text
- https://www.fangjin.org/ckfinder/userfiles/files/82605933930.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=naruto+ultimate+ninja+storm+4+road+to+boruto+free+download+androidPDF 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_off0000d767.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD767 | 17604 bytes |
SHA-256: 270946cb4fc01b913ad3e5b4661aa834a00e29a4b7079ebb7a59c130de75567a |
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font_01_sfnt_off0001051d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1051D | 11028 bytes |
SHA-256: d4b8f9a19a3fda7ecc852efa41e38c61f4d254692f3aa4eb8febbd771829390b |
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font_02_sfnt_off00011ecb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11ECB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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