MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a security-bypass lure. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 7
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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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Security software disable instruction high SE_SECURITY_BYPASSDocument instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
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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://coretry.ru/uplcv?utm_term=autocad+2013+activation+code+generator+x+force PDF link annotation
- https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/0783ef24a43ce9caa85f993234a782bb/pagakukukajanelux.pdfIn PDF document text
- https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078247869321---febize.pdfIn PDF document text
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/7a4b81a3bbb11d889b80fe00a506407b/fibetawuro.pdfIn PDF document text
- https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/froa0btcc1jbogktb697cgo3u6/waligebanub.pdfIn PDF document text
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/2b5c346405b87ad9d6c0ad1fdecb544b/jetatozejokodexixatopemuw.pdfIn PDF document text
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/06e8aab3b868e6d17b058335b9249c52/27075944690.pdfIn PDF document text
- https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/b70de16e5e6ca467e9958cefe6217c1c/15604021969.pdfIn PDF document text
- https://doucetplasticsurgery.com/ckfinder/userfiles/files/fofuzikuwatuwabejimebo.pdfIn PDF document text
- https://bustotoronto.com/userfiles/file/najijemipemibejigujep.pdfIn PDF document text
- http://hitecds.com/userfiles/file/35387642848.pdfIn PDF document text
- http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/52jqnmk0i264d4b6iqendn4899/31452370016.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/5f9619bb1ca0e1416727fa9b3ed7605e/1639117895.pdfIn PDF document text
- https://rosycaffe.com/file/6161142723.pdfIn PDF document text
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3a5528413---54777075234.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_005_off00012c4c.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x12C4C | 18388 bytes |
SHA-256: 6d397281caa3c72937e52a7c7e40b3989245bd1383a7d08e1573a3bf9058ea32 |
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font_00_sfnt_off0000f299.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF299 | 5588 bytes |
SHA-256: 1258d11d3f9c1b5d30128c0d5c112ad009ba84fb125625d0605bd2ca5b0dbd5e |
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font_01_sfnt_off000105c4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105C4 | 11648 bytes |
SHA-256: 7ed8d0047b3e0dc14b2be88195ef649c38ce79937f7d855fe49aa7429f0fbee8 |
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