MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a link farm used for phishing or malware distribution. The document body, though heavily obfuscated, contains references to 'English to spanish learning pdf' and 'wkhtmltopdf', likely a lure to disguise the malicious nature of the embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://ketchas.ru/uplcv?utm_term=english+to+spanish+learning+pdf PDF link annotation
- http://sl1971.com/clients/5/51/517263f0417f9379c67e6eba0e0bdfe8/File/vujeduzuvefilovo.pdfIn PDF document text
- https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/f2fc803703309dc2d7a441a2aa909678/84788433719.pdfIn PDF document text
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/cc275ba0a27075c8ce7a4b2bf5f817f4/39764885786.pdfIn PDF document text
- https://prawobrzeze.info/userfiles/file/53033601110.pdfIn PDF document text
- http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/a14fa54c1b1aa05f8a5f331c243f1221/56462621241.pdfIn PDF document text
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/ef7b8112f2c16900109304017251024c/91614632553.pdfIn PDF document text
- https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/90a0c07e763f1fbba9c1e6f9c3b16a83/39211653498.pdfIn PDF document text
- http://schmetterlingsgaerten.de/file/4094066672.pdfIn PDF document text
- https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/ce9fc984de5b7bffb9a91ea3138ef102/sobaxogebabemibuwemebelif.pdfIn PDF document text
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1608585f2af470---getuvegal.pdfIn PDF document text
- https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2f114d80c---24758327498.pdfIn PDF document text
- http://dokumsuzgec.com/userfiles/files/vexatalilunox.pdfIn PDF document text
- http://aylincinarli.com/fckfiles/file/vepezed.pdfIn PDF document text
- https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/76dd5aaee6aa6e448f51410ec954d9b3/19193558353.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d834.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD834 | 5048 bytes |
SHA-256: eeb374e3a1f2190090d7be1913c6942c0148a694e84ac2bf623a258d28391b16 |
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font_01_sfnt_off0000e951.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE951 | 11016 bytes |
SHA-256: 8621f480f219e2e70b22c05db5ee447f14908fe77469907d57a1f7d3f7c292c3 |
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font_02_sfnt_off00010de0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DE0 | 4324 bytes |
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f |
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