MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, many of which point to compromised WordPress sites. These links appear to form a link farm designed to redirect users to phishing or malicious content, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://oniceh.ru/uplcv?utm_term=lock+app+with+password+android PDF link annotation
- http://dolekkoyum.com/admin/UserFiles/file/74056305548.pdfIn PDF document text
- http://kasaitogo.com/uploads/files/mutojikumusininekana.pdfIn PDF document text
- http://physio-praxismitte.de/userfiles/xopisigoga.pdfIn PDF document text
- http://www.darvidproperty.com/news/file/vuvawejimabamijujoregufup.pdfIn PDF document text
- http://safires.cz/ckfinder/userfiles/files/depexalegujuvimipejo.pdfIn PDF document text
- http://studiodebiaggi.eu/userfiles/files/zaripewabepamovelateki.pdfIn PDF document text
- http://fcv-bo.org/data/fcv-bo/userfiles/file/filip.pdfIn PDF document text
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/41c82e84c7dcf75168d0c4664b6fbf74/jasivezop.pdfIn PDF document text
- http://test-immo.com/file/vidajorewofipitofupi.pdfIn PDF document text
- http://garage-fuji.jp/js/upload/files/gumajokufajasedezifozul.pdfIn PDF document text
- http://oldmotorsclub.com/files/file/21190774996.pdfIn PDF document text
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614615dca0b69---sawizibanan.pdfIn PDF document text
- https://www.ventisilva.com.br/ckfinder/userfiles/files/64587431072.pdfIn PDF document text
- http://sameiroeventos.pt/ficheiros/xatizukupenu.pdfIn PDF document text
- https://kaimano.it/file/97156027777.pdfIn PDF document text
- http://cl-pub.com/files/files/xikolumixu.pdfIn PDF document text
- https://daotaolaixesontay.com/uploads/file/53189508169.pdfIn PDF document text
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16142469532d5b---56596631194.pdfIn PDF document text
- https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/1789984879.pdfIn PDF document text
- https://adikkeempat.com/contents/files/vabowitazetij.pdfIn PDF document text
- http://land89.com/ckupload/files/92618156646.pdfIn PDF document text
- http://vidol.nl/userfiles/file/10546144359.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_off0000b5bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB5BF | 16188 bytes |
SHA-256: a8504d79f03ee203c64ca14bfa1ba9c32159d6efb5c865eded0cc0f7224ea61b |
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font_01_sfnt_off0000df0e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF0E | 10568 bytes |
SHA-256: ebe01b464059a5c83b62ec6c7ef361e1851d8b47ebc816657f77b3fa5865601f |
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font_02_sfnt_off0000f738.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF738 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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