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 ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery, aligning with the Spearphishing Attachment technique.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://styrexon.cz/userfiles/file/sevozelir.pdf In PDF document text
- http://gesundezellen.com/neu/userfiles/file/82325795488.pdfIn PDF document text
- http://joyandwowbook.com/upload/file/616453599.pdfIn PDF document text
- http://bsa-billiard.by/images_from_html_editor/file/5835527176.pdfIn PDF document text
- http://www.mezmat.ru/ckfinder/userfiles/files/pofaz.pdfIn PDF document text
- http://www.its-dph.cz/admin/fckeditor/editor/userfiles/file/11190781200.pdfIn PDF document text
- http://platypusspot.org/uploads/ckfinder/userfiles/files/52098397051.pdfIn PDF document text
- https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/ut7k38e0ruopf2adh5oai0h592/neduwewagugidimuresuxur.pdfIn PDF document text
- http://bibliotekaszamocin.pl/img/upload/files/83129363302.pdfIn PDF document text
- http://www.ecrivains-consult.fr/easyonline/ckfinder/userfiles/files/66988385810.pdfIn PDF document text
- https://fuze-pay.com/ckfinder/userfiles/files/75333133057.pdfIn PDF document text
- https://nitdgp.ac.in/uploads/userfiles/files/zuwabimugit.pdfIn PDF document text
- http://naasschoolofmotoring.ie/fckeditor/userfiles/file/55669889043.pdfIn PDF document text
- http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16134a5cdc69e0---xivojowe.pdfIn PDF document text
- http://360global.ca/userfiles/file/91298239183.pdfIn PDF document text
- http://tko.wavedev.net/img/files/files/komufopepez.pdfIn PDF document text
- http://tao-oita.com/admin/upload_filesfile/76777737857.pdfIn PDF document text
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135a6333ddb5---bobamibavibulesabovobib.pdfIn PDF document text
- http://drthchowdary.net/userfiles/file/90897746686.pdfIn PDF document text
- http://yugang360.com/upload_fck/file/2021-9-10/20210910093559105097.pdfIn PDF document text
- http://nationalherbo.com/userfiles/file/68488125477.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=free+adopt+me+pets+without+human+verificationPDF 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_off0000d151.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD151 | 11068 bytes |
SHA-256: 8b860eb6850d15a7f9ae34bbe6622bf2c10ca2b81bdd66ccfb984085d845ad71 |
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font_01_sfnt_off0000eaf4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAF4 | 18108 bytes |
SHA-256: 868ff26e0950f16cdb9878041e8e95ae428bb005b87855bc17baf63085e4ac10 |
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font_02_sfnt_off00011a02.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A02 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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