MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, including links to compromised WordPress uploads and disposable hosting, indicative of a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
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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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://wastran.ru/uplcv?utm_term=how+to+receive+android+messages+on+iphone
- http://wxbeimei.cn/upload/ckimg/files/202109201743265273.pdf
- https://www.thic.net/plugin/ce1/ckfinder/userfiles/files/78273387060.pdf
- http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16138b17fc0d34---vibiliradit.pdf
- https://highrise.pl/file/49759591529.pdf
- https://visualarchive.bg/files/rozurakuvivovepuxux.pdf
- http://lnv-cnc.com/userfiles/file/gabalota.pdf
- http://gold-carsales.com/js/upload/files/31914705355.pdf
- http://www.radanhorse.com/resource/files/sanukukijubumulo.pdf
- http://girlstown.org/files/js/ckfinder/userfiles/files/90081359495.pdf
- http://darec.sk/files/files/41307581585.pdf
- http://itcck.org/upload/editor/file/nojinigotavejevezevasu.pdf
- https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/d5a6a981d95a0acd51c8003245f6ac53/bovuvomikevibudefe.pdf
- https://misbahelmudii.org/ckfinder/userfiles/files/fodatibapiribiwuv.pdf
- http://icareonline.net.au/ckfinder/icare/files/fewetox.pdf
- https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140d57461fec---xekerogaliniduta.pdf
- https://cjsc.se/ckfinder/userfiles/files/mawavipa.pdf
- https://3eyamaichi.com/upload/ckfinder_temp/files/20210908171921.pdf
- http://caythuocdangian.net/images/files/lusigogonumanitukimul.pdf
- https://tvmreza.tv/ckfinder/userfiles/files/numajoroxafitele.pdf
- http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16136cf0ab72d6---buvegotozolikibajirezorex.pdf
- https://bishopsalamatkhokhar.org/userfiles/file/28879731580.pdf
- http://pecsimutargygaleria.hu/files/file/valesal.pdf
- https://akrmedia.no/ckfinder/userfiles/files/51896979548.pdf
- https://rougezenekar.hu/files/file/pujexevewivejikaw.pdf
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161340ea106da0---13381152936.pdf
- http://lactopad.com/uploads/files/zebotebadodulivunu.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_off0000d5fb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5FB | 16792 bytes |
font_01_sfnt_off0000ee12.bin2adfaf2ba759a06da40c052377504208da5671de3dda36618ed730252a988cc6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE12 | 11056 bytes |
font_02_sfnt_off00010770.bin41683ea2fdd4afc06ca09173c3afdb6b69b6698f44c0f51566f95f8994c8f896 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10770 | 17672 bytes |
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