MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised websites or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed as a link farm, likely to redirect users to malicious content or phishing sites. The ML classifier and ClamAV detection strongly suggest malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 7
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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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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://inwebjor.ru/uplcv?utm_term=arcade+game+download+for+android
- http://monticellotownship.org/userfiles/file/wamijinaledetaxejirenar.pdf
- https://paroles-vives.com/ckfinder/userfiles/files/lawigexexelenesuzukov.pdf
- https://jmtours.co/aym_image/files/fozojozufokufujegaf.pdf
- https://alatheir.com/atheirwsfiles/file/57925892573.pdf
- http://magendans.com/imagefiles/file/90680556429.pdf
- http://appli-veolia.net/ckfinder/userfiles/files/wolaza.pdf
- https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/aba02425609cbbeebf1ea27187595b3c/54217597176.pdf
- http://czdashan.cn/uploadfile/file/2021091618452973499.pdf
- http://em-mould.com/ckfinder/userfiles/files/fimuzitofaxeseranetebu.pdf
- http://jjw-led.com/userfiles/file/jagibivomonetaxajo.pdf
- http://balogmihaly.hu/UserFiles/file/gemevowozijuzatipezutud.pdf
- https://jagamimpi.org/contents/files/nigexanukusod.pdf
- http://autostyle-japan.com/js/upload/files/buwokutuxas.pdf
- http://chpcentre.com/files/file/70590144260.pdf
- http://ahchala.com/img/file/8042568990.pdf
- http://rfaaa.com/UploadFile/file/20210903181738605.pdf
- https://iva-vietnam.com/userfiles/file/tabiwudab.pdf
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/f3a9c67ac7faaa570ab4168b6b8bf875/pagitarexabawugenig.pdf
- https://korovin.org/site/img_ufiles/45589303180.pdf
- http://taxplus.in/images/contentimages/files/90052168267.pdf
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/d130617770150e1290a5d119a1905f6d/16151117120.pdf
- https://www.seblocation.com/ckfinder/userfiles/files/xawalepovexu.pdf
- http://hnfond.cz/storage/file/pozikik.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_off0000b354.bin8c57dfe52b5a74fb7210573c8ea424d447ffcc470ba380913312d73045c1967f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB354 | 15216 bytes |
font_01_sfnt_off0000d9ed.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9ED | 16792 bytes |
font_02_sfnt_off0000f204.binc2faf34b4daf6acd3f82538f80914d50823ee11c1bee2533250308e52eb1017c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF204 | 10620 bytes |
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