MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document containing embedded JavaScript, which is a common technique for executing malicious code. The PDF also contains numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
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 http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135ce46583a0---72252073631.pdf In PDF document text
- https://podimercrm.com/img/files/13506934686.pdfIn PDF document text
- http://wintec-samu.hu/uploads/files/kisoxo.pdfIn PDF document text
- https://alihuata.com/userfiles/file/juxorapewepirimekewiwujo.pdfIn PDF document text
- http://aviapartner.biz/js/ckfinder/userfiles/files/mamutumiz.pdfIn PDF document text
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614025d37a5f0---zutobegilubu.pdfIn PDF document text
- http://locthanhroyal.com/upload/files/86432480635.pdfIn PDF document text
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16131d93f261ea---xovabilumebifarevosawexek.pdfIn PDF document text
- http://sendedianqi.com/upload_fck/file/2021-9-3/20210903215838430620.pdfIn PDF document text
- https://turkihale.com/userfiles/file/In PDF document text
- https://edinburghpools.com/contents/files/42331133749.pdfIn PDF document text
- https://panegovernance.com/ourprojects/chowki/UserFiles/file/14401701124.pdfIn PDF document text
- http://munnartourism.com/uploads/file/18523182080.pdfIn PDF document text
- http://anapharmata.hu/ckfinder/core/connector/php/files/28915302.pdfIn PDF document text
- http://85560891.com/upfolder/e/files/20210908174855.pdfIn PDF document text
- https://art4you.sk/editor_uploads/system/files/mamogejefigogirusi.pdfIn PDF document text
- http://print-resource.co.uk/ckfinder/userfiles/files/paxazubopafotexora.pdfIn PDF document text
- http://fabrikando.com/cmsimple/images/file/99110204981.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=app+inventor+for+androidPDF 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_off0000e872.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE872 | 17948 bytes |
SHA-256: d6619c92d02743b8d5cd7835f79fe39c42f2d625fca017e35279afd5ceebc98f |
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font_01_sfnt_off000115b7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x115B7 | 10324 bytes |
SHA-256: 69aedf5ffd9c14217e694f8f544619ede5c9d017297697c194d3f2396196b864 |
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font_02_sfnt_off00012d23.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D23 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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