MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file contains embedded JavaScript and a significant number of external links, many pointing to potentially compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest a malicious intent to distribute further malicious content or phish users. The embedded JavaScript likely facilitates the redirection or execution of malicious code upon opening the document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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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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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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 http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/61791316538.pdf
- http://attlas.center/userfiles/file/ligisonawiw.pdf
- https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/i3g6a1k0k8fpsnk0tn9j20adj5/12446901068.pdf
- https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/4594c098f5992bcba69eb243ba907943/tejonopotumibenuge.pdf
- https://ap-qatar.com/userfiles/files/mawotadiliwazetafu.pdf
- http://ayurvedicclinic.org/userfiles/file/kumorelixetaz.pdf
- https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/bce095702f0edf4fb9b714d568b888ac/ximozakuzedetit.pdf
- https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/1b55f215249fd9a6041981bd0a0955d6/32734223942.pdf
- http://buddhavehicle.com/userfiles/file/zamiruk.pdf
- http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5510b7d47---towaluterubanugaduzisujan.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/qaipn290qc1vtle8phljjmtuc4/60712805911.pdf
- http://group-anons.ru/userfiles/files/43658227953.pdf
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607175b2123c8---52960125665.pdf
- https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/c26a0ec3f9876dace557378f998f3b86/getoferujesidobawuk.pdf
- http://vinag7furniture.com/app/webroot/files/editor_upload/files/24454133842.pdf
- https://zlatartopalovic.rs//files/32939992213.pdf
- http://jadeite.ru/images/file/49083007136.pdf
- https://cevhertemizlik.com/userfiles/files/25303974913.pdf
- https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/9b2ea9160bc53d126203e855b0ab5d0f/7756760425.pdf
- http://www.77ice.com/upload/files/90983511249.pdf
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160b41721a2e13---52814912577.pdf
- http://cn-daomeng.com/upload/userfiles/files/949a925ebc3df9d8380386984e5f368b.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=green+synthesis+of+copper+oxide+nanoparticles+using+plant+extract+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_off0000cb63.binf4dead701ca2dc8af524d99d49ee73abc88f70db3a1f3e94d092c45482f72fd6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB63 | 18680 bytes |
font_01_sfnt_off0000fb67.bin7cffa3dd5b4312c3cccfca3e01ba0b9ace37e0346e88ab00879959159f18ca4d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB67 | 11252 bytes |
font_02_sfnt_off0001159d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1159D | 16792 bytes |
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