MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The embedded document body, though heavily obfuscated, contains metadata related to wkhtmltopdf and a date, but no clear instructions or lures.
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://chcial.ru/uplcv?utm_term=principios+de+la+teoria+del+comportamiento+organizacional+de+la+administracion PDF link annotation
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/140b418e25bdc2f991bdfcae74250913/90437688538.pdfIn PDF document text
- http://beiwendq.com/userfiles/file/75550982073.pdfIn PDF document text
- https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/11a15a041d9bc8a20c83c2027a04f9ca/nuvexiloperebabo.pdfIn PDF document text
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/f2167c15a2b7d324710219eb9272635d/gagedurelipip.pdfIn PDF document text
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16083d78bbff3f---30443156202.pdfIn PDF document text
- http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa805801cb---32917578679.pdfIn PDF document text
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ff25b6bed---fojegivuxexawe.pdfIn PDF document text
- https://chmelo.hu/sites/default/files/file/bolagezelamafuzosorovevir.pdfIn PDF document text
- https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/fa2905c904fd2c21dc8bf478d8d86e2a/sasoregumomerewajaxoxul.pdfIn PDF document text
- http://przychodnia-felinskiego.pl/uploads/editor/file/37447410375.pdfIn PDF document text
- http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1607f62595ad24---54668536565.pdfIn PDF document text
- https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/965lthimkoc1hel9qecefbeqkp/88976794990.pdfIn PDF document text
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/c0ac067d96b1d0c7bb2c32fe7edf0873/towexofeniwepiruduren.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/p67b696endsghaoqvcnr3n4fnp/rivavokekovowori.pdfIn PDF document text
- http://noxsun.com/jingkelun/userfiles/files/20210601053255.pdfIn PDF document text
- https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16095df3edce11---dijidawapojijaranukel.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_off0000eaf8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAF8 | 5444 bytes |
SHA-256: b6cd7db5a8d4449705cd073d18c2d6e59468df85e01af0b2a0ed294e10fa7132 |
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font_01_sfnt_off0000fd6d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD6D | 11388 bytes |
SHA-256: 0409460e0c68cc4a3427a2a4ae3a86aee6218651d396e31ce4ec033dcc5f6c2f |
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