MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also features a link farm pointing to multiple external URLs, some of which are hosted on compromised CMS uploads, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://garglob.ru/uplcv?utm_term=application+of+linear+algebra+in+electrical+circuits PDF link annotation
- http://santinitravel.co/files/others/23033169207.pdfIn PDF document text
- http://eamenfaraz.com/cache/fck_files/file/57785401882.pdfIn PDF document text
- https://alzubidi.com/userfiles/files/24969984581.pdfIn PDF document text
- http://herbwaterthailand.com/userfiles/files/boliwej.pdfIn PDF document text
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/21e6e8116e2ab11edefa47c672c366ff/34335936555.pdfIn PDF document text
- http://vecsecity.info/editor_up/56573432414.pdfIn PDF document text
- http://galettedesrois.hu/userfiles/file/tetok.pdfIn PDF document text
- https://www.fibertech1.com/my_content/js/ckfinder/userfiles/files/jotajikudifelizotufili.pdfIn PDF document text
- http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16141983c29c4c---raxukosutaju.pdfIn PDF document text
- http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613df4c9b490c---buzabanulalumit.pdfIn PDF document text
- http://benetalent.com/upload/files/53068047110.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e75db7a143---33962299354.pdfIn PDF document text
- http://otevrel.eu/ckfinder/userfiles/files/fitujubefezeja.pdfIn PDF document text
- http://www.satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/reborizide.pdfIn PDF document text
- http://kleinschaden-expert.de/userfiles/file/60516517994.pdfIn PDF document text
- https://zivotzaokny.eu/res/file/tirade.pdfIn PDF document text
- http://deauville.ru/files/file/xodasozukufurepa.pdfIn PDF document text
- http://yangs-ns.com/ckfinder/userfiles/files/20210924022530.pdfIn PDF document text
- https://pelicanfinancialnetwork.net/ckfinder/userfiles/files/25797940297.pdfIn PDF document text
- https://listapp.in/ci/userfiles/files/pelamazabuwowemufa.pdfIn PDF document text
- https://www.eos.org.eg/ckfinder/userfiles/files/junosaxofepafuwor.pdfIn PDF document text
- http://ziva-muzika.cz/files/file/18584553998.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_off0000d12f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD12F | 18532 bytes |
SHA-256: 8a5e430b48653eaabbdffc8c1d9fc72ae7592682aa9447062bebe7157e1fb5de |
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font_01_sfnt_off0000ffd0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFD0 | 10876 bytes |
SHA-256: 10845d5e08d538290feb0273e258df21fd11de4063731d12a081036ba17065a0 |
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font_02_sfnt_off000118ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118EF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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