MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous URLs pointing to compromised WordPress upload directories, suggesting an attempt to redirect users to malicious content. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a pattern of using disposable hosting for link farms.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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 http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c1b6c0a1bfb---xekusegixawarar.pdf In PDF document text
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c444beabf0a---kadewizalebubidokofoso.pdfIn PDF document text
- http://crackershrimp.com/file_media/file_image/file/nabenusudobawafe.pdfIn PDF document text
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160754a7948472---35049635455.pdfIn PDF document text
- https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd24e561dd---jasedofozozewetenuxut.pdfIn PDF document text
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/a4ndladd299kh2ipkqqaeal925/bevuzimopibeb.pdfIn PDF document text
- https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b7608544e---27934160925.pdfIn PDF document text
- https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1d1af24cdb---94881925342.pdfIn PDF document text
- http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/gopasuzivalewusesitodil.pdfIn PDF document text
- http://angelescare.com/userfiles/file/zaxogetoxafexupa.pdfIn PDF document text
- http://brilliantsolarpaneling.com/userfiles/file/48100695964.pdfIn PDF document text
- https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/36dbdf4ad4761dad47907e2021bcdefc/56504058926.pdfIn PDF document text
- http://odpadykj.cz/UserFiles/File/risejonenusefijifurox.pdfIn PDF document text
- http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bc41fc16cbe---62214645348.pdfIn PDF document text
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/138f38f2c023fa9fa76a5d85c2fcfe81/gutusu.pdfIn PDF document text
- https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/1619240359.pdfIn PDF document text
- http://bobas24.pl/Upload/file/kelexewezulikinatal.pdfIn PDF document text
- https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/834689b2691a1e6922e791b53092d810/nafubifobaxejigezonit.pdfIn PDF document text
- http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160babaf302a3b---95891794944.pdfIn PDF document text
- http://gleneaglehoa.org/images/file/loxemojujufudalebigemi.pdfIn PDF document text
- http://www.ecvbrass.ch/user/web/file/lojilo.pdfIn PDF document text
- http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16082f0107d4bf---20163809210.pdfIn PDF document text
- https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/a00f7d316ad667c74c7406c1042e35a8/22378993981.pdfIn PDF document text
- http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/1e7295d8467232e451359f4532c36de1/xetonavaxibowubut.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=array+of+objectsPDF link annotation
- 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_off0000c64f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC64F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000de61.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE61 | 16636 bytes |
SHA-256: e6fc0a97312579b70127e302c75c29872d96b7d148ae86cdb2e77dcd7eccbf0b |
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font_02_sfnt_off00010980.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10980 | 10452 bytes |
SHA-256: 8af750776663f449586ceb2b63d9d4cb9034b2bf0f1b6da88ce0e13f65742282 |
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