MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports the interpretation of this file as a malicious link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://infrive.ru/uplcv?utm_term=android+ice+cream+sandwich+applications PDF link annotation
- http://etabetasurvey.com/userfiles/files/rowozofoditewiluxolodepab.pdfIn PDF document text
- http://jkbprivateiti.com/userfiles/file/87505096181.pdfIn PDF document text
- http://stellarp.com/userfiles/files/37226789191.pdfIn PDF document text
- http://brixtontaxi.com/survey/userfiles/files/22972998944.pdfIn PDF document text
- https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/d3a94800fd5eb753c3f02bfd72fe6697/bamuwonojewezarudiligi.pdfIn PDF document text
- https://isleo.com/i_photos/file/bisonukitizijaxe.pdfIn PDF document text
- http://15881588.com/ckupload/files/22237580148.pdfIn PDF document text
- http://www.corazondelsol.es/ckfinder/userfiles/files/75268376313.pdfIn PDF document text
- http://pensjonatagat.pl/userfiles/file/jabetisanedo.pdfIn PDF document text
- http://vpsystem.com/files/fck/kuweje.pdfIn PDF document text
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143e687407a7---4283032254.pdfIn PDF document text
- https://atrax.eu/userfiles/file/48933391121.pdfIn PDF document text
- https://ezastupitelstvo.sk/editor_uploads/system/files/nubivufonubapijara.pdfIn PDF document text
- http://mrrb.nexgendevgroup.com/files/daxemudefabejavirinifes.pdfIn PDF document text
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/b7c384b80a7709a695df7331de1dfdb0/46170453163.pdfIn PDF document text
- http://kiko168.com/UploadFile/file/20210901142437527.pdfIn PDF document text
- https://www.zolmedis.lt/ckfinder/userfiles/files/sevojofamavazoraro.pdfIn PDF document text
- http://laserinnsbruck.com/static/22239017836.pdfIn PDF document text
- http://kursverwaltung.fit-n-essen.ch/ckfinder/userfiles/files/nosezo.pdfIn PDF document text
- http://www.dilipprabhavalkar.com/images/file/42381555719.pdfIn PDF document text
- https://securitydm.rs/slicice/file/buzagepofiboteduparut.pdfIn PDF document text
- http://perchegouet.com/ckfinder/userfiles/files/64551776849.pdfIn PDF document text
- https://eric-parnes.shortex.com/ckfinder/userfiles/files/lipadatoduto.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_off0000be63.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE63 | 16568 bytes |
SHA-256: 1b4ce06b080e54af593acd59037d2185b88e657573b21c2facc2c9d9107a5c0b |
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font_01_sfnt_off0000e8ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8EA | 10848 bytes |
SHA-256: 5abfe657ca498ce13538ba19e9e8673d674e57b8bb52564f639acd86156214ca |
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font_02_sfnt_off000101d8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101D8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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