MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, appears to be a lure related to a medical query, likely to trick users into clicking malicious links. The ClamAV detection and ML classifier strongly indicate malicious intent.
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://crewmak.ru/uplcv?utm_term=what+is+a+bulging+disk+in+lower+back PDF link annotation
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7c64d0028---904891647.pdfIn PDF document text
- https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/ef221224689f5d54fb8046cc939c71b0/rurosixiwobofawinepedidip.pdfIn PDF document text
- http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160733bd7c23aa---62687232102.pdfIn PDF document text
- https://songhong.info/userfiles/file/57537281342.pdfIn PDF document text
- https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/4bfngjgk611loukodtrrmdi5en/butitajepasumo.pdfIn PDF document text
- https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/0cd4068882ced388a5fb08f4af32569a/44087339152.pdfIn PDF document text
- http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607333d2879d4---bivitemoxoxufasuroz.pdfIn PDF document text
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/hm394hddabguk8e8qle6ds7n7k/guzim.pdfIn PDF document text
- http://ed-web.cz/userfilesfile/36066859245.pdfIn PDF document text
- http://cba60.com/clients/6/6c/6c2dd71b6188bc8e8f5adc6209c6f86c/File/zosuzagimidosaparopewuz.pdfIn PDF document text
- http://xn--b1agjlwjc3g.xn--p1ai/ckfinder/userfiles/files/runevinenakedipibowab.pdfIn PDF document text
- https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/t9ks37i63o62kek6ajcb1qe8nm/54830704159.pdfIn PDF document text
- https://hazeloyun.com/calisma2/files/uploads/kobejupaxuded.pdfIn PDF document text
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160c2c9f295a41---zefaf.pdfIn PDF document text
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/8n38k3sk40olkrv2tv79ev7sfe/xusizu.pdfIn PDF document text
- http://mhinflatable.com/upload/file/53468078477.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_off0000dd54.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD54 | 5508 bytes |
SHA-256: b17305f7d6e3b675426983986ddaf93e7da4e76fa30440a6196f354041ea6391 |
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font_01_sfnt_off0000f023.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF023 | 10908 bytes |
SHA-256: 827612d81c834a2e71854370499cf2a4139ec477034441c79d03a054e64295df |
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