MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF containing embedded JavaScript, flagged by ML classifiers and ClamAV as malicious. Heuristics indicate a social-engineering lure to install a browser extension or update, a common tactic for credential theft or malware delivery. The embedded JavaScript likely facilitates this malicious action by interacting with the user or initiating further malicious activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://anjingliar.com/contents/files/95688064853.pdf In PDF document text
- https://adamant54.ru/userfiles/files/97432154256.pdfIn PDF document text
- https://pergamine.com/ckfinder/userfiles/files/zozen.pdfIn PDF document text
- http://proart.by/media/file/kureki.pdfIn PDF document text
- http://textingrights.com/userfiles/files/7336624729.pdfIn PDF document text
- https://paradigma.bg/uf/file/xanoputujesewujelaram.pdfIn PDF document text
- https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16139ad0d5f4b0---15989421031.pdfIn PDF document text
- http://hongpakthai.com/ckfinder/userfiles/files/libekuzadunem.pdfIn PDF document text
- http://potentialdesign.cn/userfiles/file/1630699969.pdfIn PDF document text
- http://cioccolatogallucci.it/userfiles/file/xexubipupefasasebijet.pdfIn PDF document text
- https://anctools.com/ckfinder/userfiles/files/60655329190.pdfIn PDF document text
- https://silatur.com/js/ckfinder/userfiles/files/56040086122.pdfIn PDF document text
- http://www.siscbolivia.com/admin/uploaded/fck/file/67344221210.pdfIn PDF document text
- http://drcleancenter.com/uploads/files/202109050255057811.pdfIn PDF document text
- https://insinkerator.us/images/uploaded/file/17274632778.pdfIn PDF document text
- https://lawina-radom.pl/files/file/73567075335.pdfIn PDF document text
- http://syuncyoku.jp/upload/file/77117262091.pdfIn PDF document text
- http://goldcoil.com/uploadfiles/files/51192253622.pdfIn PDF document text
- http://globalsocialwlefaresummit.com/app/webroot/uploads/ckuploads/files/dowolajibapowo.pdfIn PDF document text
- http://hcbarrett.com/user_area/file/71068570821.pdfIn PDF document text
- http://solo-reisen.com/media/images/file/64497527775.pdfIn PDF document text
- http://www.lebedosapartotel.com/data/yukle/files/45584000983.pdfIn PDF document text
- https://sowlindia.com/userfiles/file/nonuganususovad.pdfIn PDF document text
- http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/2021931256496899.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=comparatives+and+superlatives+list+pdfPDF 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_off0000d7ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7ED | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f004.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF004 | 10856 bytes |
SHA-256: a7d48f2ef9fd15e2250f9868401ba2313f0cda2c7aa8c833a96cbb4e8c0c831d |
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font_02_sfnt_off00010914.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10914 | 17988 bytes |
SHA-256: dfab29bd3607f97f8534af142613cbc56c1acb7a178c88d55a1db6fe913ba34a |
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