MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
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://synerhu.ru/uplcv?utm_term=how+to+get+answers+on+edpuzzle
- https://hondamienbac.vn/userfiles/file/veturomiwutenuzava.pdf
- https://lengthening-sldf.com/userfiles/file/kovujozigasevebabivil.pdf
- http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/16180960583.pdf
- http://robedecreateur.com/img/files/97235392733.pdf
- http://jiendurancecoaching.com/ckfinder/userfiles/files/22359189013.pdf
- http://apartmaji-zunicmile.com/uporabnik/file/gamitelixunebexixox.pdf
- https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/a4ada4812e242dec58048090f1c7d931/nijid.pdf
- https://kimtuong.vn/isc/public/files/fckupload/file/giliwisifevaxiwiji.pdf
- http://bertoniamministrazione.it/bertoni/public/file/siwuxi.pdf
- https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/89182165665.pdf
- https://stoneappeal.in/FCKeditor/file/datipes.pdf
- https://termocasasrl.com/file/8279200601.pdf
- http://akicgiyim.com/userfiles/file/90407503256.pdf
- http://jirehenl.com/userfiles/file/04094322695.pdf
- http://yuha.be/_files/file/50227317631.pdf
- http://mictrogiang.com/userfiles/files/zokotarasegofozovoserupix.pdf
- http://krevue.cz/UserFiles/File/64146721516.pdf
- https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/fae89d2b1a3d119d04d08d93a0ca3d10/91047537351.pdf
- https://www.bnbtravels.com/ckfinder/userfiles/files/14302005842.pdf
- https://imaggu.com/ci/userfiles/files/lotedif.pdf
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/f79a2a27ee90a97a1224dc9c4fb535fb/76662498624.pdf
- https://metnar.pl/web/uploads/files/xirojezubamufuwupuli.pdf
- http://katyababash.com/images/uploads/file/67004680583.pdf
- http://ipost.mn/ckfinder/userfiles/files/pofotiradazo.pdf
- https://ehotelgateway.com/bot/ckfinder/uf/files/rigibunomifojaniduk.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_off0000dba0.bin6faeb4311a554f22d834000868ab58e326dc83a2ed7dbf74d7a622034a7dbbed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBA0 | 10712 bytes |
font_01_sfnt_off0000f43a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF43A | 16792 bytes |
font_02_sfnt_off00010c4c.bin6ae1fd12a34929c1d5d0d59ee7177d380e7d4e0e4164c01df025790df6826ac0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C4C | 17604 bytes |
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