MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://inwebjor.ru/uplcv?utm_term=utorrent+macos+catalina+download PDF link annotation
- http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c27ed62ce90---59939805092.pdfIn PDF document text
- http://funperm.ru/content/file/gaxogiwotazulirame.pdfIn PDF document text
- https://haps.company/wp-content/plugins/super-forms/uploads/php/files/u0nurqgg9hms4gb1qs2og7n1d1/tijuwitirexiselesixog.pdfIn PDF document text
- https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/4501a259467175c4fa449193823fb4c4/kovolizovilomedupogagimeg.pdfIn PDF document text
- https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/o0e7ps77j1o4ouok21andk8g1l/31920818390.pdfIn PDF document text
- https://actorconseil.com/files/file/22551386123.pdfIn PDF document text
- https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/561c6b53b6dbbda7a10d81b80e87e2c3/22866128386.pdfIn PDF document text
- http://marketypik.pl/zdjecia/fck/file/68151860332.pdfIn PDF document text
- https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/a6ee9ae7844c51380426a4584e445cd3/30823943857.pdfIn PDF document text
- https://kimtuong.vn/isc/public/files/fckupload/file/fejitat.pdfIn PDF document text
- http://www.sport-konyv.hu/userfiles/file/lerivasizoririsanoni.pdfIn PDF document text
- http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607771064d95c---mugeliza.pdfIn PDF document text
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0f564e33c---13858248064.pdfIn PDF document text
- http://ndt-tl.ru/upload/file/64287511634.pdfIn PDF document text
- https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/0dijm3riof0d0pvejhmq9dem64/6496962133.pdfIn PDF document text
- https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/dfb28dd08e7beb8ce26ae418fb022839/52050328631.pdfIn PDF document text
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f20337b64---gururifejovu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ec4b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC4B | 5168 bytes |
SHA-256: 9342f3967df1ec0a3fcd72b26405977cd9a89495ee7a8a2ff94f3c7713165b6e |
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font_01_sfnt_off0000fdd1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDD1 | 10984 bytes |
SHA-256: 4e429794c7c247141c7c1d150f7d0a4018a909ffb0f86c8bec2d0ab41596ea63 |
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