MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, characteristic of a link farm used for phishing or malware distribution. The PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristic specifically highlights this malicious behavior.
Machine Learning
- Nyx PDF Classifier malicious score 0.9937
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 http://fullcolorspandoeken.nl/userfiles/file/fumukebepu.pdf
- http://velocimapper.com//webfiles/file/94202024108.pdf
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5e5763d36---73720816816.pdf
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/d25790a396697daf20ed5936efdd3599/28132380029.pdf
- http://auchli-appenzeller.ch/userfiles/files/3975949437.pdf
- https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5dd244ad2b---43013534393.pdf
- http://ukrainski-rosyjski.pl/userfiles/file/wibejidefeferumotumaso.pdf
- http://christopherdallo.com/file/83159341167.pdf
- https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/0o9ka1cmfngufg9437jiek1c8c/xegepatidirewimame.pdf
- https://jaiminsales.com/ckfinder/userfiles/files/puzeluxuk.pdf
- https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/a2752122ecf3508f7a301342969b1abb/wisetalinafo.pdf
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/3af387bd380cc48c85aa571d75018a15/34995111121.pdf
- https://tongdaidoanhnghiep.com/app/webroot/upload/files/xonokede.pdf
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd74749600e---66902106623.pdf
- http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/160843d8906184---52275573969.pdf
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609252c4d8db9---sajevozitogekudizibe.pdf
- https://balajitutorial.com/admin/userfiles/file/28420612899.pdf
- http://ahdongjiu.com/upload_fck/file/2021-5-5/20210505105050818274.pdf
- https://jamurgoreng.net/contents//files/91231767531.pdf
- https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/75f881e4be6c878438e3baf072ce4ec3/giniruto.pdf
- https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/4f7f91a5fef87012414455499772158d/lojalejelenubiwopiro.pdf
- https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/247vemaevn8635l4bhib6s7gs6/japabipa.pdf
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/c5b45ce92f43156832ddaa3dcd813355/falikowimugejiwizuf.pdf
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a85e426a899---82595018338.pdf
- https://marlin-aquarium.ru/ckfinder/userfiles/files/xirani.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+make+a+private+tf2+server+with+friends
- 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_off000105eb.bin80b3623dd48491ac1654df194a04ab4b860b75aaea9872d153d840267a51a073 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105EB | 17368 bytes |
font_01_sfnt_off00013333.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13333 | 16792 bytes |
font_02_sfnt_off00014b4a.binf320e04e9c1fa59a5b845373845f8930afd3867a61c87701661aa40e8369e479 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14B4A | 11072 bytes |
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