MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS upload storage or disposable hosting, suggesting a phishing or malware distribution scheme. The embedded JavaScript likely facilitates the redirection to these malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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 https://ketchas.ru/uplcv?utm_term=instagram+video+views+apk PDF link annotation
- http://otelm4b.ru/admin/ckfinder/userfiles/files/gifovanafevonolifuruse.pdfIn PDF document text
- http://daisin1977.com/js/upload/files/28666859986.pdfIn PDF document text
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files/wijatutukox.pdfIn PDF document text
- http://ukwoodrecycling.com/userfiles/files/75364723425.pdfIn PDF document text
- https://wendi101.com/userfiles/file/60225756111.pdfIn PDF document text
- http://gaestehaus-am-erlkoenig.de/img/editor/file/vawizuronipakixuma.pdfIn PDF document text
- http://robbes.nl/media/files/konuzuponaxiwironemudak.pdfIn PDF document text
- http://brilliantsolarpaneling.com/userfiles/file/guzenes.pdfIn PDF document text
- http://investinwielkopolska.pl/application/lib/ckfinder/userfiles/files/bukixinodesa.pdfIn PDF document text
- http://milwaukee.center/userfiles/file/zelobime.pdfIn PDF document text
- https://alcoquimicos.com/ckfinder/userfiles/files/bodajopifibigemes.pdfIn PDF document text
- https://impactmediaresources.com/userfiles/file/pavatevodurit.pdfIn PDF document text
- http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/161341aacb77d4---10333567234.pdfIn PDF document text
- http://soft-pro.hr/upload/datoteke/wunutufesuv.pdfIn PDF document text
- https://sadex.pl/fck/file/55879714776.pdfIn PDF document text
- https://angkorphotographyguide.com/userfiles/file/11071558754.pdfIn PDF document text
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/161355dcb899be---37372823802.pdfIn PDF document text
- https://radekslodkiewicz.pl/files/file/50111867195.pdfIn PDF document text
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ae4b15ddb6---widotabinugo.pdfIn PDF document text
- http://southerncross-ex.com/images/blog/file/51275814297.pdfIn PDF document text
- https://jin-ji.com/upload/files/lomukigu.pdfIn PDF document text
- 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_off0000db82.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB82 | 10884 bytes |
SHA-256: 5447233dddf9374d905a26ae26bf3ca7608526b209ecb071491b1bc17d1ff48d |
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font_01_sfnt_off0000f483.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF483 | 18032 bytes |
SHA-256: 17c8a8b4382e7599386502d17db81be2887d19582fd02c70df12ecbad30bb096 |
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font_02_sfnt_off0001236c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1236C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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