MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress installations. The heuristic 'ML_NYX_PDF_MALICIOUS' and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to exam answers, aligning with phishing tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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://crysiq.ru/uplcv?utm_term=exam+booster+preliminary+answers+pdf PDF link annotation
- https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/ab7a6e54b4feb35558026eb858b659aa/76253253886.pdfIn PDF document text
- https://amursvoidom.ru/media/files/39788227086.pdfIn PDF document text
- https://peterdegendt.be/file/35171868802.pdfIn PDF document text
- https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/84ftq40823cscbmio0uutpepkg/26065594774.pdfIn PDF document text
- https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/390f63a9c499819b95a257856ab36c22/48172177703.pdfIn PDF document text
- http://guides2alpes.fr/uploads/file/62800055474.pdfIn PDF document text
- https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/9r1cvio7kn94r1i1pq9joqadt5/82923092764.pdfIn PDF document text
- http://a-kamen.com/userfiles/file/36983747013.pdfIn PDF document text
- https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/5d5975816c11eee0b9e2de4195719574/xufusuvumimabezisekeki.pdfIn PDF document text
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb9179377a2---sufajizabatosu.pdfIn PDF document text
- http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/16083bdc1949fc---7194267189.pdfIn PDF document text
- http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/80dosasirnc86qaun6fta7q83g/zopijufuxibinilikive.pdfIn PDF document text
- https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/561366bb4c96b0a81db9e98e7f8ecddc/jikab.pdfIn PDF document text
- http://upbfassadenbau.com/upload/file/tobubeb.pdfIn PDF document text
- https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6ad2a295ad---78814171941.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_off0001a86a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1A86A | 5548 bytes |
SHA-256: 118e985e2855073736133068f40da4aa6938077a2256419b92ee24111db3bc11 |
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font_01_sfnt_off0001bb46.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1BB46 | 12552 bytes |
SHA-256: a5dea5a497f3557afc4580bc408cb3a223da4f70c4d0e1e4278aba057acb0b63 |
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