MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggest a link farm designed to redirect users to malicious content. No scripts were extracted, but the overall structure and URL distribution indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://wastran.ru/uplcv?utm_term=nerve+pain+running+down+arm PDF link annotation
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/161370db51286c---73421969186.pdfIn PDF document text
- http://fishtech.org/uploads/userfiles/file/file/62389088777.pdfIn PDF document text
- http://eiffelflowersquesnel.com/userfiles/file/vupamuzozunusozam.pdfIn PDF document text
- https://tourpon.kr/FileData/ckfinder/files/20210904_2C6C8337ECB925EB.pdfIn PDF document text
- https://dom4m.by/userfiles/files/84472098990.pdfIn PDF document text
- http://amunt.madteam.net/ckfinder/userfiles/files/6967244376.pdfIn PDF document text
- https://wemservice.com/ckfinder/userfiles/files/vutosamegemez.pdfIn PDF document text
- http://exima.kr/userData/board/file/3956734669.pdfIn PDF document text
- https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/e77815040b6d8cdb1c4b405acc80ec9c/24861796965.pdfIn PDF document text
- http://soft-pro.hr/upload/datoteke/remaxosizimiretijijij.pdfIn PDF document text
- http://orenprom.com/img/account/file/57603244428.pdfIn PDF document text
- http://dichvubaove.online/upload/files/2517307639.pdfIn PDF document text
- https://xn----7sbbg1ddpkdc.xn--j1amh/uploads/files/wibifomumutedatox.pdfIn PDF document text
- https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/0d38942bd385a82dad7dbee06ff18241/77122586694.pdfIn PDF document text
- http://portalcom-b2b.es/img/user//file/_0245565001631085815.pdfIn PDF document text
- https://pbpkrosno.com/fckfile/36482886439.pdfIn PDF document text
- http://nhadephoanhao.vn/upload/ckupload/files/tefugek.pdfIn PDF document text
- http://www.hgbehringer.de/img/files/files/piwemelokumeroketowesum.pdfIn PDF document text
- http://polaryachtmanufactory.com/res/wysiwyg/file/51875291548.pdfIn PDF document text
- https://palet-school.com/files/files/70977824832.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b68e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB68E | 10652 bytes |
SHA-256: 7fb126acd33ba5325eade1206678b1552b06dc3373f83453430c5fe160465681 |
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font_01_sfnt_off0000ceb3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCEB3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e6c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6C5 | 16100 bytes |
SHA-256: 24c023d4d089cac2ba059320c899bd5365c9a6f6db64a465b281c3c2f9347a02 |
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