MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The 'SE_BROWSER_INSTALL_LURE' heuristic suggests the document attempts to trick the user into installing a malicious browser extension or update. While no scripts were explicitly extracted, the presence of numerous embedded URLs, many pointing to PDF files on potentially disposable domains, supports a phishing or malware distribution scheme. The document's structure and embedded links are consistent with a phishing lure designed to lead users to malicious sites or downloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9950
Heuristics 6
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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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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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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://xingzhongjing.com/userfiles/file/20210919140843_1750506881.pdf In PDF document text
- http://ceroki.com/image/files/volarikatinonuwowomi.pdfIn PDF document text
- https://sensiblemachines.com/ckfinder/core/connector/php/files/8981233595.pdfIn PDF document text
- http://anhuicrew.com/upload_fck/file/2021-9-14/20210914042959354119.pdfIn PDF document text
- https://tktravelkorea.com/FileData/ckfinder/files/20210912_9E6F0091E415C2FA.pdfIn PDF document text
- http://palaciodelosnavas.com/userfiles/file/79868225444.pdfIn PDF document text
- https://gencerenerji.com/resimler/files/98986876221.pdfIn PDF document text
- http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/16140e3d65b421---87917336688.pdfIn PDF document text
- http://needychild.org/ckfinder/userfiles/files/xuvom.pdfIn PDF document text
- https://www.pollackmihalyiskola.hu/ckfinder/userfiles/files/31816463391.pdfIn PDF document text
- https://bdata.vn/upload/files/rotolevesipetolode.pdfIn PDF document text
- https://oilbasaro.com/web/images/ckfinder/files/20210919024901.pdfIn PDF document text
- https://valenciamaids.com/userfiles/files/22361136499.pdfIn PDF document text
- https://renesens21.com/ressources/upload/files/68674543685.pdfIn PDF document text
- https://lockerova.eu/admin/upload/documents/8631856986.pdfIn PDF document text
- https://beldaoyun.com/calisma2/files/uploads/3504159383.pdfIn PDF document text
- https://ichapps.peaceofworld.com/ichapps/ckeditor-ckfinder-integration/uploads/files/texewojoz.pdfIn PDF document text
- https://rockyhotelsgroup.com/uploaded/files/57326404075.pdfIn PDF document text
- http://patp1ryb.ru/media/file/parusogabe.pdfIn PDF document text
- http://xn--12cfu9bc1efac9a9azfdsb7b9d1f0j.net/ckfinder/userfiles/files/vadojubevajutisowa.pdfIn PDF document text
- https://www.nvsrolko.org/ckfinder/userfiles/files/87648900349.pdfIn PDF document text
- https://sistemkabin.com/ckfinder/userfiles/files/63807283182.pdfIn PDF document text
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/1ea28c7dc56dfb27ef1eca04bcaecf71/kowisijepodiziwel.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=unity+vr+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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d05a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD05A | 1968 bytes |
SHA-256: a4775e474dff9ed7dc7a2bdf50a7ece41326610c30c070582630c1cd451228f8 |
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font_01_sfnt_off0000d973.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD973 | 10084 bytes |
SHA-256: 331707e6a2f6d984e170c0de948f11d761bb554ff4c03c10d0a696146a63ba40 |
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font_02_sfnt_off0000f000.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF000 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_03_sfnt_off00010812.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10812 | 17852 bytes |
SHA-256: 265c4b3385af995fef9d962e4679c7518997a1e394685fe15bc7de8148044944 |
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