MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains numerous external URLs, many pointing to compromised WordPress uploads or disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the PDF_URI heuristic indicate an attempt to direct users to potentially harmful external content, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9984
Heuristics 6
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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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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 https://archism.ru/uplcv?utm_term=les+cons%C3%A9quences+de+la+deuxi%C3%A8me+guerre+mondiale+en+afrique+pdf
- http://entryexpress.online/chapter_images/files/30377533831.pdf
- https://termofriz.rs//files/64020151095.pdf
- https://cooperspick.com/files/63580240791.pdf
- http://www.77ice.com/upload/files/78767384335.pdf
- https://newtech-utm.pl/userfiles/file/67787792288.pdf
- https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/cf4b1d97a24b60ce76fc9e40e9d85f62/xivuwedutamumufeletagezov.pdf
- http://kudusde.org/resimler/files/26167932135.pdf
- https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/142d6f84d8eb1836413fd14bfd454dc7/wedogafelufali.pdf
- http://techbico.vn/uploads/image/files/taxovizudigiwarotorez.pdf
- http://lideparts.com/userfiles/file/1626204628.pdf
- https://divinenine.net/userfiles/file/wexunemaxejewuzapigolam.pdf
- http://b-solutions.net/userfiles/file/35431105617.pdf
- http://japanbizkorea.com/userData/ebizro_board/file/vevegivexuk.pdf
- http://asijskepotraviny.cz/files/file/89845401741.pdf
- http://www.w.radeton.cz/ckfinder/userfiles/files/62700360694.pdf
- https://windsbs.biz/files/file/5961524059.pdf
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e5d5608d0---24564003179.pdf
- https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/6cd3b8f6a0c044a0b2aabc44ea5e60c9/jujarokadukuraw.pdf
- https://textosolutionslinguistiques.ca/upload/editor/file/66775786155.pdf
- http://gokea.org/upload/editor/files/89890365662.pdf
- https://petribax.nl/userfiles/file/jisexavatinizawi.pdf
- https://partnermind.cz/images/files/nasukobetubidanutov.pdf
- http://akcihlar.cz/userfiles/file/renolix.pdf
- http://xn--80akazwaeiw.xn--p1ai/editorfiles/file/67181513172.pdf
- http://gorisum.net/fckeditor/upload_file/file/32237437341.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c118.bina6a0d08e197c8360d893908a4b00de548b21dd66fac021cf3257716da488f5b8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC118 | 11480 bytes |
font_01_sfnt_off0000dafc.bind9f4fa0efc4dd2f3fa08566c965629f9577bfe2f8a0d3cec578aeb55093d1a25 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAFC | 20284 bytes |
font_02_sfnt_off00010f0a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F0A | 16792 bytes |
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