MALICIOUS
224
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded JavaScript and a link farm pointing to various PDF files, some hosted on potentially compromised sites. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. The 'SE_CALLBACK_LURE' heuristic suggests a pretext for the user to call a number, often associated with tech support scams or refund phishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 9
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://rulife.ru/ckfinder/userfiles/files/43473196739.pdf
- http://easternhoteljeju.com/FileData/ckfinder/files/20210912_F46C4AD8CCB87848.pdf
- https://kalashad.com/userfiles/file/28038034675.pdf
- http://tehnicgaz.eu/files/file/88097863341.pdf
- http://sk-uralstroy.ru/uploads/files/kejifatovafojuvekaban.pdf
- https://esvigo.com/upload/files/tesuj.pdf
- https://ontogepszerviz.hu/editor_up/63050533414.pdf
- http://veronikavilla.hu/userfiles/file/xotusafijinakuwukeduv.pdf
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/eb3553a426ca52797005dfee8571c08e/28157965410.pdf
- https://eletvital.hu/uploads/files/39575385480.pdf
- http://idealhca.com/admin/images/file/xuvawep.pdf
- http://cnsgawefgl.netsociality.com/upload/files/70195583876.pdf
- http://prochem.vn/images/uploads/files/sogitokajamibijususumun.pdf
- https://i-chat.tw/js/ckfinder/userfiles/files/laxoxofilunuwagobu.pdf
- http://hasicimosnov.cz/foto/Image/file/positele.pdf
- http://rtm-plus.ru/ckfinder/userfiles/files/lawojamero.pdf
- https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/be0a6b9ad2286ff7e58a5839a16427aa/32701001273.pdf
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16143c3133f21f---28311923033.pdf
- https://techielingo.com/fck_uploads/files/bimix.pdf
- http://homokkepek.hu/editor_up/86641078874.pdf
- http://veiligheidssloten.nl/ckfinder/userfiles/files/peboxaximanimagaloxezejo.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=dictionnaire+pour+tablette+android+gratuit
- 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_off0001187c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1187C | 16792 bytes |
font_01_sfnt_off00013093.bin734287f85ff783c7c4b5e4be98319473ca3c9024ed1ae0e67210a28ec9362162 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13093 | 10760 bytes |
font_02_sfnt_off000148f6.binc94a354460a71869bcb40bf26d83d87f35fb1cea98686b28770ab28bc17295ce |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x148F6 | 20960 bytes |
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