MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. Multiple URLs point to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no direct user-facing content but reinforcing the nature of the file as a container for malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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://krisoc.ru/uplcv?utm_term=endorse+in+tagalog PDF link annotation
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615e36043e6ea---domeduxotelujatu.pdfIn PDF document text
- http://lnianemarzenie.pl/userfiles/file/winobamek.pdfIn PDF document text
- https://fong-cai.com/upload/files/guxasosevi.pdfIn PDF document text
- http://pereplanirovkaoblast.ru/pict/file/dalovejexozawirogimuga.pdfIn PDF document text
- https://diamond-marketing.cz/soubory/sutulotirexogi.pdfIn PDF document text
- http://airzo.net/userData/board/file/vexevesabekesimojumoxezez.pdfIn PDF document text
- https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/cttchq9vdvg1i1k4urlovvd0vq/ferixasoj.pdfIn PDF document text
- http://moveworldtogether.com/datas/files/vonutilixufagununoluxip.pdfIn PDF document text
- http://abwingsmd.com/uploads/files/10486178712.pdfIn PDF document text
- http://reliancefla.com/admin/images/file/52328580005.pdfIn PDF document text
- https://www.dogandemir.av.tr/paketler/ckfinder/dosyalar/files/suwexow.pdfIn PDF document text
- http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613abca2270cf---23404807778.pdfIn PDF document text
- https://g55net.com/webpagebuilder/ckfinder/userfiles/files/85670861839.pdfIn PDF document text
- http://doorsatyrau.com/ckfinder/userfiles/files/jituso.pdfIn PDF document text
- http://datong-travel.tw/upload/ckeditor/files/20210908212836.pdfIn PDF document text
- https://piauiaqui.com/ckfinder/files/kixabed.pdfIn PDF document text
- http://eluvial.com/sites/all/sites/eluvial.com/files/48384304116.pdfIn PDF document text
- https://szelvedojavitasmiskolc.hu/files/files/juxejixubigipil.pdfIn PDF document text
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1614e9286525a3---43795868661.pdfIn PDF document text
- http://vankouwenenmastop.nl/UserFiles/file/bubedepulisidorafu.pdfIn PDF document text
- http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/161542d0e5f161---15907615546.pdfIn PDF document text
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16150fbd6713bf---5265367145.pdfIn 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://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_off0000c181.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC181 | 17180 bytes |
SHA-256: 89dc5a5d96870086334ba297d01033a5e8bb5e26d1775c6de80d533ea5ca1806 |
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font_01_sfnt_off0000edc4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDC4 | 10408 bytes |
SHA-256: 52db6d2a7ee123da35c5d7bb476239ad9e9ed8451c0ca7d863f89071aaa4215a |
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font_02_sfnt_off00010537.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10537 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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