MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
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. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for executing malicious code within PDFs.
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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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://crewmak.ru/uplcv?utm_term=best+chess+game+for+android+2021
- http://regmac.net/userfiles/files/nolije.pdf
- https://totalmediasolutions.ae/ckfinder/userfiles/files/nabavizit.pdf
- https://sdhouse.info/ckfinder/userfiles/files/96821625375.pdf
- http://kanizsakran.hu/userfiles/file/tatuxuvatat.pdf
- http://xnucleus.com/members/member_images/files/66775916108.pdf
- http://raegcafe.com/uploads/files/lejemugot.pdf
- https://specializedfacilitymgt.com/public_html/userfiles/file/gejubev.pdf
- https://bienenaktuell.com/sites/bienenaktuell.com/files/file/lokope.pdf
- https://telewebmarketing.com/FCKeditor/file/37011212234.pdf
- http://izhar-energy.com/userfiles/file/kazizamesalirudopiraw.pdf
- https://dpengineers.info/admin/userfiles/file/janofokolinajeluwa.pdf
- http://namlinhchisapa.com/userfiles/image/file/gofeferutirisojakutute.pdf
- https://anukulagrotech.com/userfiles/file/27242461659.pdf
- https://intrastorg.com/userfiles/file/kufupuxolexevojuxakujuj.pdf
- http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1614197cf1531a---92995869077.pdf
- http://pspectr.ru/userfiles/file/monazolumefemepisusi.pdf
- http://prplus4u.com/ckupload/files/ruwefumujupure.pdf
- https://boucherienabli.com/uploads/FCK_files/file/bodezaragigovoguxudo.pdf
- https://www.padanguparduotuve.lt/ckfinder/userfiles/files/31249888617.pdf
- http://hla.vn/upload/files/74921712094.pdf
- https://thebottombillion.org/business_school/uploads/file/rinodowaj.pdf
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1613a8116d9fac---mamenemurofulis.pdf
- http://stsmcc.org/www/js/ckfinder/userfiles/files/7095731180.pdf
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/0b716588d4e3f9f39ac56bb60a5c2677/40998175050.pdf
- http://kortennis.co.kr/B/ck/ckfinder/userfiles/files/muretefijupefalunovirav.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_off0000d975.binba82f8e2a246aa72c80e804d5ebbcdc01dee1b370bd3060a866fd4a445619d98 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD975 | 17280 bytes |
font_01_sfnt_off000105b9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105B9 | 16792 bytes |
font_02_sfnt_off00011dd0.bin13bbf450784067ac78a75f49c10c277e5370e390ba66f6b301eafd878596571a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DD0 | 11224 bytes |
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