MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous external URIs and link farms pointing to compromised WordPress upload directories and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of embedded URLs indicates an attempt to redirect the user to malicious sites, likely for credential harvesting or further payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9895
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 https://inwebjor.ru/uplcv?utm_term=the+citadel+rick+and+morty
- https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a05f92d93ac---sobesefaxinisemegot.pdf
- https://doellefjelde-mussemarked.dk/images/newsmail/file/jiwosumesixeluguz.pdf
- http://fogathajtohirek.hu/fckfiles/file/49301507414.pdf
- http://alpanelektrik.com/depo/sayfaresim/file/jizane.pdf
- http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4a7ba04cfc---72255469364.pdf
- http://labonguyenhoang.com/img-chamthi/files/75827259550.pdf
- https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/e8a23c97be2a7e47885124e68ce5e2e8/kinapozezalozimowipobasan.pdf
- https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/kvdt5ilcr84kvdoqqs5itf2dan/33646572984.pdf
- http://elmbbq.com/uploads/files/97654159271.pdf
- https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b78d6d4c2c---57665461000.pdf
- https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/60fp2ogef7u33j3jupqr5apndk/xunakepireseburapenirup.pdf
- http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cad3147895---jexurifivoje.pdf
- http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b47c12383e0---56140558398.pdf
- https://tasleemdubai.com/userfiles/files/71195906066.pdf
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f35adcd533---kufurixekuxijekoki.pdf
- http://willettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/97538544849.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081a1a77017d---woravax.pdf
- https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/a8bcde69047e234e4e18d1e9d8f1aa6a/13963862673.pdf
- https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/4de487729df70b3a71c7258ed2c42a22/ralunujexubarutojumu.pdf
- http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16089315df0acf---94396520207.pdf
- https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/a5835b61f2fdcdbcdbc70d5076127aa5/ronufejerilet.pdf
- http://imailbox.nl/images/uploadedimages/file/gaverorozawepilepif.pdf
- http://www.northern-japan.com/image/upload/File/22510464808.pdf
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1b4549eee---tikirijuxunuferewezebize.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_off0001b98d.bin40d2caccbcbed12cb5f050fae044c7d237b4f92f5ea64fcc4810e4db9ddc3f1a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1B98D | 17444 bytes |
font_01_sfnt_off0001e67e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1E67E | 16792 bytes |
font_02_sfnt_off0001fe95.binc1dede706ad77ec9275b7223d2fb22080ad43617c79591a5b34b580b954db0c3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1FE95 | 10636 bytes |
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