MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' reinforces the attack pattern of using the PDF as a lure to external, potentially malicious, sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9916
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://oniceh.ru/uplcv?utm_term=integracion+con+fracciones+parciales+ejercicios+resueltos PDF link annotation
- http://btc-ltd.com/upload/file/77438437477.pdfIn PDF document text
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/8126aef827663c77924601822fd9f1d1/xigokasabozidodet.pdfIn PDF document text
- http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/a98d167f94e8249ef60a76181e647623/22093343996.pdfIn PDF document text
- http://apsara.ru/userfiles/file/10494475231.pdfIn PDF document text
- http://textingrights.com/userfiles/files/56344688285.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2a45f5ee7d---1297161095.pdfIn PDF document text
- http://ciarajewellery.com/editor_upload/file/46984354861.pdfIn PDF document text
- https://biroestarsa.hu/uploads/file/2042171872.pdfIn PDF document text
- http://www.gieskestukadoors.nl/ckfinder/files/files/nobewapalirepizevivaxixek.pdfIn PDF document text
- https://kurek-rowery.pl/user_pict/file/62761627882.pdfIn PDF document text
- https://marblobaths.ph/app/webroot/img/files/6837755238.pdfIn PDF document text
- http://kadh.kr/bobod/upload/file/bapenal.pdfIn PDF document text
- http://bandenplaats.nl/cmsimages/file/lagiladusalodiw.pdfIn PDF document text
- http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160cc679463004---9131982065.pdfIn PDF document text
- https://www.casestilistas.es//ckfinder/userfiles/files/24419160649.pdfIn PDF document text
- https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/e5a6bfd6f2208f0ea47111e2729bc5c6/94738674625.pdfIn PDF document text
- http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f3f0f997bf1---xotunokipuniluvijepejaf.pdfIn PDF document text
- https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/11cb3fdcbac52012f6054cdd10214698/8418092225.pdfIn PDF document text
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/7add60f923671c85f73119ba397ee3e1/jorebabolopewasem.pdfIn PDF document text
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9d00fdea95---viwidizegawedevejuwuwar.pdfIn PDF document text
- http://cnzgks.com/userfiles/file///95680974771.pdfIn PDF document text
- https://ludifrance.fr/userfiles/file/48736916545.pdfIn PDF document text
- https://vieclamxaydung24h.com/upload/files/48563824800.pdfIn PDF document text
- https://celebicatering.com/upload/ckfinder/files/70174986906.pdfIn PDF document text
- http://thuonghieutoancau.vn/uploads/files/nigadisekagasexetarorazir.pdfIn PDF document text
- http://mygiftltd.com/userfiles/file/sibodukalufabiguleresaki.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_off000116ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116ED | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00012eff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12EFF | 19404 bytes |
SHA-256: 7dbfc4a143931a6b661961ecc57c80d55c675ffddc2d711c70b6326e65450d35 |
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font_02_sfnt_off0001604b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1604B | 10836 bytes |
SHA-256: f015663581f0e5e2f6987f69ba2b19dfba1fe1c14cf94200f549b6ff9dbb2586 |
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