MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it contains numerous links to compromised CMS upload storage and disposable hosting, suggesting it's part of a link farm designed to redirect users. The primary attack pattern involves directing users to external URLs, likely for phishing or to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9957
Heuristics 6
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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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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://smidgel.ru/uplcv?utm_term=all+in+one+english+class+9+answers
- https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/0caed535cfbccc845e877f2c6310a984/14603085011.pdf
- http://mygotour.com/FileData/ckfinder/files/20210529_C099633754D830A3.pdf
- http://beijingxinzhi.com/userfiles/file/20210605022722_211900412.pdf
- http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160775e9d692ab---vivoxudeduxagojirovatok.pdf
- http://tsrmmessina.it/userfiles/files/livisurinad.pdf
- https://numberonerevolution.it/file/vules.pdf
- https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/910a8beccea8363f7019ff317019c173/mamilow.pdf
- http://gopherandsquirrelcontrol.com/admin/images/file/76874546183.pdf
- http://www.advokat.com/app/webroot/img/fck/file/13508365759.pdf
- http://eltonltd.ru/sites/default/files/uploads/jikigezufegit.pdf
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160adbb8dd9705---93093451210.pdf
- http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c889ef2f610---67076760619.pdf
- http://aweibel.com/Photo/file/34767296098.pdf
- http://kleiberit.ru/files/file/97332483373.pdf
- http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/h63rt2p0sd6gjvac3b28pt7gt5/rotolisozerunixij.pdf
- http://chromowane.com/userfiles/file/39730807130.pdf
- https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/87cae424ea120c7303a7f8349d7950a7/47434606992.pdf
- http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c9b2e203715---vokijakisafapokugeb.pdf
- http://nessium.net/userfiles/file/91524080637.pdf
- https://cambodiaangkorhomestay.com/userfiles/file/68491507265.pdf
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/2c51035d616939f7958251ce06f7d003/19150569799.pdf
- https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/92ed7a951400e493998d567451d893d1/pawaxogosenowubef.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_off000111fb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111FB | 16792 bytes |
font_01_sfnt_off00012a12.bine2a16fa221f24b6a9fcd4c4b881e2bd70e8e0bc15dbc528e85b3eb725a476414 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A12 | 10648 bytes |
font_02_sfnt_off00014279.binebc32b44d47930ec9b3e2a57cdd7e027a3ec04ddd004c243ecf3f6930516ae65 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14279 | 17312 bytes |
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