MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The heuristic 'SE_SECURITY_BYPASS' indicates the document may also contain instructions to disable security software, further supporting a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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Security software disable instruction high SE_SECURITY_BYPASSDocument instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
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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://ketchas.ru/uplcv?utm_term=what+are+the+10+most+populous+countries+in+the+world
- http://carrozzeriardue.it/userfiles/files/gufalarepijebonirebub.pdf
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d1776918f2---posopevuvemupiruzitures.pdf
- http://himalayakebab.com/shipinc/userfiles/files/bogoluxerem.pdf
- http://bluelakehomestay.com/uploads/image/files/35300930048.pdf
- http://yaqeen-eg.com/userfiles/file/vuzidirigomonat.pdf
- http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c2115d034c---19716908367.pdf
- http://gps-tw.com/CKEdit/upload/files/18806661658.pdf
- https://accuratesearch.com/userfiles/file/miwogulewivesis.pdf
- http://jiachuankeji.com/upload_fck/file/2021-9-23/20210923222115864875.pdf
- http://icaalliance.org/filespath/files/20210907204535.pdf
- http://iwayman.com/uploadfiles/file/210921031535574301n5nrdm.pdf
- http://driscollandgibson.com/images/edit_images/file/luguguwademupupi.pdf
- https://sailstudy.in/ckfinder/userfiles/files/wotelisabinemifezodup.pdf
- http://gianenricofabro.com/userfiles/files/rovukukunomuvapomamus.pdf
- https://rireenfrance.com/images/upload/files/daxaz.pdf
- https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/46438c1068cbf679dbcc6de18598193d/guxojade.pdf
- http://camel-republic.com/media/userfiles/files/27537027447.pdf
- http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140e3a6701da---26142093598.pdf
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161474e4d113d6---90191465048.pdf
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137619591702---lagazavofumi.pdf
- http://klubalfa.org/img/userfiles/file/9366373427.pdf
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/16136953e124d4---17567356575.pdf
- http://mojahotels.com/ckfinder/userfiles/files/numejakugotebatusobozilen.pdf
- http://cluster006.ovh.net/~greeters/be/ckfinder/userfiles/files/96640722842.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_off0000b523.bindd4134d343902ac23edec8a5f96fdb1ee4462caf033b50bb53d9b54cd9789c3c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB523 | 16656 bytes |
font_01_sfnt_off0000df7c.bin87f189b4cc2cc8bc46db177916aeaef8ab0f126a35b815fa8b2260c45cba6b07 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF7C | 11132 bytes |
font_02_sfnt_off0000f966.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF966 | 16792 bytes |
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