MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains numerous links to external websites, many of which appear to be part of a link farm designed to obscure the true destination. These links are likely used to redirect users to phishing sites or download further malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports the phishing and potential malware distribution vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://coretry.ru/uplcv?utm_term=the+word+study+concordance+pdf PDF link annotation
- http://jagdrevier.hu/upload/images/file/nirenilebawenurap.pdfIn PDF document text
- http://yilbasipromosyonu.com/userfiles/file/bebuzadonexuk.pdfIn PDF document text
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f61de39340---69780811953.pdfIn PDF document text
- http://edwindijk.nl/home/edijk/domains/edwindijk.nl/public_html/uploads/file/94062665228.pdfIn PDF document text
- http://think6.net/ckfinder/userfiles/files/20210905015543.pdfIn PDF document text
- https://contact-house.com/fckeditor/upload/file/raluzitezasobutag.pdfIn PDF document text
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161373dace963f---nudoxinu.pdfIn PDF document text
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/16132c920e78ce---57166521556.pdfIn PDF document text
- https://marathonlaval.com/userfiles/files/pewazipegufojovoduxafe.pdfIn PDF document text
- https://www.studioline.ie/ckfinder/userfiles/files/54050570926.pdfIn PDF document text
- http://yongqingtech.com/d/files/tufefigiwugaba.pdfIn PDF document text
- https://hamayeshniroo.com/shop/file/15588311057.pdfIn PDF document text
- http://cyc.cz/pictures/clanky/files/zevotovekel.pdfIn PDF document text
- http://andrenickels.de/ckfinder/userfiles/files/2729705377.pdfIn PDF document text
- https://eastmanllc.net/ckfinder/userfiles/files/runojumapa.pdfIn PDF document text
- https://wfca-czech.cz/temp/userfiles/files/mamunujazigeji.pdfIn PDF document text
- http://rescue119.org/userfiles/file/damasidejojefa.pdfIn PDF document text
- https://thefertilizerequipment.com/d/files/jevipigataguzorapu.pdfIn PDF document text
- http://ergakiland.ru/files/files/68729834332.pdfIn PDF document text
- http://fairway.cc/images/blog/file/28129149793.pdfIn PDF document text
- http://blekinge.boj.se/uploads/userfiles/files/47264262668.pdfIn PDF document text
- https://fptica.ru/images/file/julipuxowaveviga.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_off0000b2db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2DB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000caed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAED | 15940 bytes |
SHA-256: faa9393f37f7479f1aa746ac0c63bc20d657928583e54ba194a71009388bc1cc |
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font_02_sfnt_off0000f2fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2FA | 10844 bytes |
SHA-256: 46182392c22e38f5a1a126cf1d1c863da577120828a66a69f01542dad1e64593 |
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