MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics indicates a strong intent to drive traffic to external, potentially malicious, URLs. No scripts were extracted, but the overall structure and heuristics point towards a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://chcial.ru/uplcv?utm_term=eliminar+ventanas+publicidad+android PDF link annotation
- https://egca.fr/userfiles/file/pedobiruxori.pdfIn PDF document text
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16140fd96c1eb3---66930824007.pdfIn PDF document text
- http://busto-wl.gattinonimondodivacanze.it/themes/userfiles/files/sisuwuzukuba.pdfIn PDF document text
- http://tsnpharma.com/upload/files/7012972659.pdfIn PDF document text
- http://cp-1.ru/userfiles/files/23173870601.pdfIn PDF document text
- http://goang-hann.com/uploads/files/202109022323021822.pdfIn PDF document text
- http://stonepigments.com/userfiles/file/vekizijomitedi.pdfIn PDF document text
- https://autoandtruckrepair.net/nbloom/fckuploads/file/979129473.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c4815acdb4---losudidilixebokur.pdfIn PDF document text
- https://oolong-dining-co.com/webroot/editor-uploads/files/79130999758.pdfIn PDF document text
- http://quangcaosmsgiare.com/media/ftp/file/17481193020.pdfIn PDF document text
- https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/9a2cc729df77da0c7b2d966547822835/nazawiduzijuvumiwabigep.pdfIn PDF document text
- http://4998horo.gmmwireless.com/contents/files/48084182544.pdfIn PDF document text
- http://www.egymast-segito.hu/uploaded/fck/file/wowikukufu.pdfIn PDF document text
- http://nagyberki.hu/sites/default/files/fck_uploads/file/52431482527.pdfIn PDF document text
- http://ptichile.cl/userfiles/file/zubedelido.pdfIn PDF document text
- http://mutitar.com/user_img/files/76459485617.pdfIn PDF document text
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/lapotuwufokeloral.pdfIn PDF document text
- http://akademia-jedenastka.pl/zdjecia/fck/file/51951161153.pdfIn PDF document text
- http://lightningriskassessment.com/ci/userfiles/files/tixejajexo.pdfIn PDF document text
- http://stellarp.com/userfiles/files/873383984.pdfIn PDF document text
- http://gomsuhoangminh.com/app/webroot/uploads/files/90163714936.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_off00011c00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C00 | 10964 bytes |
SHA-256: f2e634fbb5726c1cc57b7b39bf95f7974f256dc439a6de5364a957e0a9f74771 |
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font_01_sfnt_off0001352b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1352B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00014d3d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14D3D | 21796 bytes |
SHA-256: f2c9c3926e0c2a22efa50efbbdf38e082675cb3b6d225b8d31a75ae71e9d83d9 |
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