MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and is flagged by heuristics as an image-only document designed as a phishing lure. It also contains numerous external URIs, many of which point to PDF files hosted on potentially disposable domains, suggesting a link farm or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect the user to a malicious site or download further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9837
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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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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://m-astar.com/UserFiles/files/nokep.pdf In PDF document text
- http://surveycook.com/upload/tmp/202109/file/75960003041.pdfIn PDF document text
- http://darstin.com/userfiles/files/bufidamawoka.pdfIn PDF document text
- http://esistore.de/userfiles/file/kuporomadegilutusub.pdfIn PDF document text
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/srv8pi036kfjjeo2fb37l2hjpg/21969765580.pdfIn PDF document text
- http://salwex.hu/file/61836814786.pdfIn PDF document text
- https://berbagiangka.com/contents/files/7240959946.pdfIn PDF document text
- http://poaglasses.com/uploads/files/202109010731081228.pdfIn PDF document text
- http://myphamvickwhitebeck.vn/luutru/files/8725397378.pdfIn PDF document text
- http://joyerialaplaza.com/ckfinder/userfiles/files/32691965132.pdfIn PDF document text
- http://msnladyboy.com/ckfinder/userfiles/files/xedokewavabepo.pdfIn PDF document text
- http://dywin.com/uploadfile/files/rorex.pdfIn PDF document text
- http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/161474d1ed9c15---nozubexodagalifaka.pdfIn PDF document text
- http://studioarchterreni.it/userfiles/files/wivikedebuderaleri.pdfIn PDF document text
- http://www.pethouse.es/ckfinder/userfiles/files/97525572668.pdfIn PDF document text
- http://lideparts.com/userfiles/file/1632564886.pdfIn PDF document text
- https://readandenjoy.ae/userfiles/files/82833933906.pdfIn PDF document text
- https://siliconautomation.com/userfiles/file/33698088929.pdfIn PDF document text
- https://shatalarab-llc.net/userfiles/files/jupitelotiser.pdfIn PDF document text
- http://www.alborada.es/ckfinder/userfiles/files/35389831742.pdfIn PDF document text
- https://fruitssupplier.com/app/webroot/img/files/10322739687.pdfIn PDF document text
- https://ceccardolj.ro/userfiles/file/lozusejif.pdfIn PDF document text
- http://nanumed.ro/uploads/files/15800898487.pdfIn PDF document text
- http://tearose-kitchen.com/sites/default/files/images/imcefile/84232419480.pdfIn PDF document text
- https://sassanoproperties.com/FCKeditor/file/mexawateb.pdfIn PDF document text
- https://bonekarusa.com/contents/files/kovoroxu.pdfIn PDF document text
- https://i-chat.tw/js/ckfinder/userfiles/files/buwerogesuganemenin.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=well+labelled+diagram+of+heartPDF 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_off0000b2cc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2CC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cae3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAE3 | 10664 bytes |
SHA-256: 29b849b6bd4ba1da21b05f154720d0e291c6e01cf3a4769259e260856ef763ca |
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font_02_sfnt_off0000e30b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE30B | 14556 bytes |
SHA-256: 6a8da7bedd93eb6e47ebbd7d24b1daf24032b78abbfa62ff107db7ea810eaa8b |
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