MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains numerous links to other PDF files hosted on compromised websites, suggesting a link farm or phishing campaign. The presence of external URIs and link farm heuristics points towards an attempt to lure users to malicious content or exploit SEO vulnerabilities.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://cructi.ru/uplcv?utm_term=honor+9x+pro+update+android+11 PDF link annotation
- http://flightshop.jp/images/blog/file/magapavalep.pdfIn PDF document text
- http://artkulinaria.pl/sites/default/files/file/jijimibudifomilumuban.pdfIn PDF document text
- http://dostrojar.sk/UserFiles/file/3453203843.pdfIn PDF document text
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132264ba9936---62694686522.pdfIn PDF document text
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1613f9d6aba539---90062775063.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16136cf38c1beb---67993349354.pdfIn PDF document text
- https://luatkhangthai.vn/upload/fck/file/75339416677.pdfIn PDF document text
- https://satnamunicipalcorporation.com/admin/ckfinder/userfiles/files/75201319921.pdfIn PDF document text
- http://www.39koratmachinery.com/file_upload/files/77720355582.pdfIn PDF document text
- http://lrm.mcdonalds.ua/ckfinder/userfiles/files/86532596686.pdfIn PDF document text
- https://cryptobasics.biz/uploads/files/fokepinuzaxebutibisemejen.pdfIn PDF document text
- http://amsasecretariat.fr/userfiles/file/nirabodusugitit.pdfIn PDF document text
- http://leeclinic.kr/userData/board/file/sizobofamafetuvisefe.pdfIn PDF document text
- http://oilspecchem.com/files/41848114765.pdfIn PDF document text
- https://ketdoanbus.com/webroot/img/files/89434470529.pdfIn PDF document text
- http://filipdegreef.be/uploads/files/24192849658.pdfIn PDF document text
- http://www.sname.org.tw/sname/ckfinder/userfiles/files/konapazevuwutijomekuraseb.pdfIn PDF document text
- http://intelekt.biz/uploads/pages/files/67328677157.pdfIn PDF document text
- http://vietsonplastic.com/uploads/userfiles/file/70359542345.pdfIn PDF document text
- http://aptekainternetowa.net/_mdm_apteki/file/54318854035.pdfIn PDF document text
- https://mimpiindahsatu.com/contents/files/94240992660.pdfIn PDF document text
- http://vakantie-noordlimburg.nl/ckfinder/userfiles/files/18924649720.pdfIn PDF document text
- http://ahchala.com/img/file/raxagumivowuvalotofoza.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_off0000dd49.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD49 | 10584 bytes |
SHA-256: 50b8200608bdaaeb200b0494dc35541562ae49589953bd1fa1ded48536b18a29 |
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font_01_sfnt_off0000f591.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF591 | 20200 bytes |
SHA-256: 6cd804433d5045f94f793c19b7348b499f4d01eeb514c636f899eb73c6f5d58f |
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font_02_sfnt_off00012a92.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A92 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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