MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using numerous small, non-clustered links on disposable hosting, further supporting this assessment. While no scripts were explicitly extracted, the presence of external URLs and the nature of the heuristics strongly suggest the PDF is intended to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 5
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://infrive.ru/uplcv?utm_term=sun+tzu%27s+the+art+of+war+pdf PDF link annotation
- http://ageofwonders.buka.ru/sadm_files/wamelijunaboxi.pdfIn PDF document text
- https://sbmhavacilik.com/userfiles/file/nototawo.pdfIn PDF document text
- http://take114.kr/FileData/ckfinder/files/20210915_F8B20CAD59286E50.pdfIn PDF document text
- http://ingore.cn/upload/files/38357692432.pdfIn PDF document text
- http://kleinschadenexperte.com/userfiles/file/mopituwivuzolonazixa.pdfIn PDF document text
- http://nissanotogovap.net/uploads/images/files/bokobanati.pdfIn PDF document text
- http://firesecurity.sk/userfiles/file/vawajuferiperamomagudofug.pdfIn PDF document text
- http://karaokejdi.com/ckfinder/core/connector/php/upload/files/57306039945.pdfIn PDF document text
- http://vinhthuan.com/upload/files/vuwuziduxef.pdfIn PDF document text
- http://www.civilhospitalpalampur.in/img/uploads/files/fugeruju.pdfIn PDF document text
- http://mopron.ru/upload/files/43434955141.pdfIn PDF document text
- http://designerhouse.ru/upload/files/kurol.pdfIn PDF document text
- https://artgallery.devctn.com/ckfinder/userfiles/files/kekudipa.pdfIn PDF document text
- http://xn--80aiddhbkcq5bcaz.xn--p1ai/upload/files/gigilapilo.pdfIn PDF document text
- http://ivankotov.ru/img/lib/file/56152354830.pdfIn PDF document text
- https://dubaimotorcycletours.com/uploaded_images/files/29548011765.pdfIn PDF document text
- http://apsencollege.org/test/fckeditor/file/54780757419.pdfIn PDF document text
- http://kirilmazbardak.com/userfiles/file/maderutododuro.pdfIn PDF document text
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/dc23825db158a4e34b74d715f0e53c3e/22621576022.pdfIn PDF document text
- http://z-him.ru/userfiles/file/kegaxelej.pdfIn PDF document text
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fd248c5240---fatofadegumega.pdfIn PDF document text
- https://qualityroofinnandsuites.com/nbloom/fckuploads/file/dabedus.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_off0000b3bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3BB | 10812 bytes |
SHA-256: f1dc5c20b89db240de4b8f8b7d9fbe98bd5c632dd0cb57e314dc925e2c37860a |
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font_01_sfnt_off0000ccc4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCC4 | 15580 bytes |
SHA-256: 2287773206c23a8c7340b9c90d27864ed1d688546ae92d8e9b99aecae07ce76b |
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font_02_sfnt_off0000f446.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF446 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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