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 compromised CMS upload directories or are part of a link farm strategy. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The primary attack pattern involves luring users to external sites via a link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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 https://xn--interpeas-r6a.es/upload/files/30901620934.pdf In PDF document text
- http://turnyras.lt/Files/file/76339843327.pdfIn PDF document text
- https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/m649chakcd6k0ka7b4d33i6gv3/70511197017.pdfIn PDF document text
- https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/607d11d9d007a499d7127d0b7d2bd51d/96517397651.pdfIn PDF document text
- https://footballsod.com/images/ck-uploads/files/nawebasegagiguna.pdfIn PDF document text
- https://kermoulin.com/userfiles/file/78402749353.pdfIn PDF document text
- https://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/87555hnlf8bo9fi7cl6obg40lt/85045561155.pdfIn PDF document text
- https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/f6a28a32ee6d5f3efafba582aef16592/lewafozifojisomexa.pdfIn PDF document text
- http://tcyy88.com/userfiles/file/2021090400221873499.pdfIn PDF document text
- http://defhjdrjioo.friend-match.com/upload/files/rikivaxeteje.pdfIn PDF document text
- http://banglatalkies.com/dynamic-images/cms/file/wafukitawopu.pdfIn PDF document text
- http://enjoybowlramenandpoke.com/uploads/files/67380952238.pdfIn PDF document text
- https://businesslife.com/content/file/16919615175.pdfIn PDF document text
- http://clerus.hu/files/file/revukexoweka.pdfIn PDF document text
- https://goooinggroup.com/userfiles/files/20210722_075357.pdfIn PDF document text
- http://angelcabrera.com/FCKfiles/file/93260424930.pdfIn PDF document text
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160811643338fe---lesekelum.pdfIn PDF document text
- https://zlataraburmevuckovic.com//files/83180601858.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/2172746592.pdfIn PDF document text
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/070a190f62a7ca3d41529e9779e1a967/detabebil.pdfIn PDF document text
- http://vladjurnalist.ru/archive/file/11681374727.pdfIn PDF document text
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efae1e2251---jawepubuzufabijewugo.pdfIn PDF document text
- http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160813e6585223---49059248786.pdfIn PDF document text
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608cabe5e01de---4624870581.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=obstetrics+and+gynecology+pretest+self-assessment+and+review+pdfPDF 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_off0000c4fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4FE | 18376 bytes |
SHA-256: 3f82f8ce03745a7286faf048db0127ae4c074a90b277b09d349dc91de76b9e71 |
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font_01_sfnt_off0000f42f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF42F | 11428 bytes |
SHA-256: 1af20180c2c24ed7de7361a315a49124db14da8a67303bc4ff7f4524f9a4e277 |
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font_02_sfnt_off00010eed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EED | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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