MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple links to external PDFs hosted on disposable domains, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of a 'SE_DOWNLOAD_BUTTON' suggest a lure to download further malicious content. The ML classifier and ClamAV detection strongly support the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 8
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://chcial.ru/uplcv?utm_term=top+5+movie+download+website PDF link annotation
- http://sasmedm.com/www/js/ckfinder/userfiles/files/75924122300.pdfIn PDF document text
- http://getdol.com/page_data/file/jopiwute.pdfIn PDF document text
- https://jesssmithtri.com/jesssmith/ckfinder/userfiles/files/36220060292.pdfIn PDF document text
- http://gdlianyu.com/uploadfiles/file/vogizulegalosuvuta.pdfIn PDF document text
- http://fra2ange.it/userfiles/files/pakabejapagog.pdfIn PDF document text
- http://zgic.ru/!upload/files/22951059546.pdfIn PDF document text
- https://panificioilcavaliere.it/userfiles/files/muluvidegivunafumiveg.pdfIn PDF document text
- http://casinodanmarkjackpot.dk/userfiles/file/15806446401.pdfIn PDF document text
- https://www.igescanada.com/ckfinder/userfiles/files/41237726579.pdfIn PDF document text
- https://quangcaowebsite.vn/uploads/files/20945672686.pdfIn PDF document text
- http://www.rodnolespropertymanagement.com/siteuploads/editorimg/file/45795845158.pdfIn PDF document text
- http://vdi.vn/userfiles/file/15680541006.pdfIn PDF document text
- http://jeyadhurgatemple.com/userfiles/file/57335489625.pdfIn PDF document text
- http://www.binghan.my/userfiles/file/43736489487.pdfIn PDF document text
- http://rafaelokazakov.com/file/45854617230.pdfIn PDF document text
- https://greenfins-thailand.org/uploads/file/maliminujomopumagisu.pdfIn PDF document text
- https://childrencareandliteracysociety.org/userfiles/files/1769466214.pdfIn PDF document text
- https://anthonygillant.com/userfiles/file/rozugapikobetafubavoselew.pdfIn PDF document text
- http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140127c50254---71467030468.pdfIn PDF document text
- http://kesherisrael.com/uploadEditor/files/6035709648.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_off0000d1c4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1C4 | 10844 bytes |
SHA-256: 223784558889860bc1b7e02b033b360836ee898838ad26c5370d85279bd3b461 |
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font_01_sfnt_off0000eaa6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAA6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000102b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102B8 | 17120 bytes |
SHA-256: 9b0da999acf8ee1c024dd5c6c8395f9d59977f07326d03ed4cdb8ffce24e7d23 |
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