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 as a phishing trojan. It contains numerous embedded URLs pointing to external sites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URI heuristics and the ML_NYX_PDF_MALICIOUS firing strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://irlanc.ru/uplcv?utm_term=siemens+hmi+ktp400+basic+manual
- https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096f345cd843---49854223339.pdf
- http://www.mezmat.ru/ckfinder/userfiles/files/wimuxozolemeso.pdf
- http://williamshudson.org/clients/3/35/35bf74ce48b5c120232fd40fb4fe3e45/File/nerewefejizizikibif.pdf
- http://sankofalectureseries.com/clients/a/ae/ae3037074ff26ae8502dacd236f4ced8/File/59795505329.pdf
- http://marinda.ru/pics/images/file/kepekonagi.pdf
- http://sartoriaventurini.com/userfiles/files/69020732764.pdf
- http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c522e07e9ab---vutotasigufuxakibeje.pdf
- https://taevlingar.se/images/pages/file/63494733878.pdf
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/0891208dd245ccd5549dc80801b7ba54/10911366732.pdf
- http://massageindex.nl/images/uploads/8501306638.pdf
- http://www.perchegouet.com/ckfinder/userfiles/files/selum.pdf
- https://xn--z4qq44i.tw/upload/actfiles/15253083062.pdf
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ff6fbc9b7b88cace0aa894d32f329bdd/kawurowiwufakinumaxi.pdf
- http://tiwtactic.com/userfiles/files/teribovigapod.pdf
- https://tepihtrava.rs//files/buropawekovaviseparomodo.pdf
- https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/mffirh9b60nedjg458k3miv05a/zususo.pdf
- http://saintthomasmonrovia.org/clients/a/a7/a774d5b45fc75aba9c6fcf07501e1e58/File/97840373326.pdf
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1606f112fbf879---vijoronepigo.pdf
- https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/7h6rlbaca27c8fvr1p0vdfbuqf/mamagoteporekufi.pdf
- http://huefpdf.org/upload/file/wulof.pdf
- https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/4ddac85d03cbe5463f8e706aa8d3f7a7/jotuzowusomukemisibip.pdf
- http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9176e798c---fonipuv.pdf
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7a52c4226---widikutefesozisot.pdf
- http://edilgroupdigiovanni.it/userfiles/files/fikili.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f4e2.bin7fa6a30c7275d0138edc372bf51de857fbaea9d25909dc3f35118511f7370db1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4E2 | 11024 bytes |
font_01_sfnt_off00010e1f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E1F | 16792 bytes |
font_02_sfnt_off00012631.bin1c4ed7a09e106105931553962fdd7731752e52d4458f0b86ebfc24c44e55c316 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12631 | 18120 bytes |
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