MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically indicating phishing and trojan activity. It contains a large number of embedded URLs, many pointing to compromised CMS uploads or disposable hosting, forming a link farm. The document body is heavily obfuscated, preventing analysis of its direct content, but the presence of numerous external links suggests a redirection mechanism for malicious purposes.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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://crysiq.ru/uplcv?utm_term=electromagnetic+spectrum+from+lowest+to+highest+frequency PDF link annotation
- http://webspace.mysdam.net/images/newsletter/files/32372844044.pdfIn PDF document text
- http://nb-magnet.com/upload/files/11511198482.pdfIn PDF document text
- https://annekienlen.fr/imagesfile/galowafabop.pdfIn PDF document text
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16130edb8703ef---73235310623.pdfIn PDF document text
- https://www.wroclawmodelshow.pl/ckfinder/userfiles/files/63004214907.pdfIn PDF document text
- https://iasvn.org/Images_upload/files/watigulelewag.pdfIn PDF document text
- https://www.tvmreza.tv/ckfinder/userfiles/files/38578527683.pdfIn PDF document text
- http://xpeedon.net/userfiles/file/20210917202906.pdfIn PDF document text
- http://lachina.cn/upload/file/xujuporogepegusubu.pdfIn PDF document text
- https://masini-de-ambalat.ro/images/userfiles/52889668126.pdfIn PDF document text
- http://araratmebel.ru/img/file/bibusojilip.pdfIn PDF document text
- http://floral-design-lindgens.de/userfiles/file/teligarerogeli.pdfIn PDF document text
- https://episcopiaoradiei.ro/files/35415474416.pdfIn PDF document text
- http://aromamahabaleshwar.com/ckfinder/userfiles/files/75081247465.pdfIn PDF document text
- http://salman-group.com/userfiles/file/51340649275.pdfIn PDF document text
- http://kingsap.com/file_media/file_image/file/20972597847.pdfIn PDF document text
- https://venus-forever.com/image/files/31333593671.pdfIn PDF document text
- http://nceed.kr/pds/userfiles/files/fizoxegomotejif.pdfIn PDF document text
- https://nguyenthelong.net/userfiles/files/delukuketago.pdfIn PDF document text
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1613ea1532ecc6---14204411071.pdfIn PDF document text
- https://speculatio.in/ci/userfiles/files/21590079362.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/161308fcfd808e---mumorenapa.pdfIn PDF document text
- https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16135a5a390960---dugupufasipuvatefapowubig.pdfIn PDF document text
- https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161348b55d6940---mefawajugow.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_off0000d34b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD34B | 11356 bytes |
SHA-256: be45320852f502788195cd8f18cab67fa8803ecbc56eba83bc16f13d211fed5a |
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font_01_sfnt_off0000ed9b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED9B | 18740 bytes |
SHA-256: b8312186a496ee652885b61fe28d027f106501c07289bac89886bcdba8535fb2 |
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font_02_sfnt_off00011eab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EAB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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