MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs that point to various websites, many of which appear to be part of a link farm designed to obscure the ultimate destination. Heuristics indicate these links are on disposable hosting and potentially compromised CMS uploads, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://huntic.ru/uplcv?utm_term=vailpuna+song+sippy+gill+download+mp3 PDF link annotation
- http://chongros.com/userData/board/file/69611946280.pdfIn PDF document text
- http://www.mamafoundation.cz/ckfinder/userfiles/files/30445876628.pdfIn PDF document text
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161390a524531e---tusakawu.pdfIn PDF document text
- http://gidaero.com/upload/fckeditor/file/pavozozininonajoteweduje.pdfIn PDF document text
- https://agri-mal.pl/userfiles/file/nasipanotuzofo.pdfIn PDF document text
- http://fvv-hohenfelde.de/sites/default/files/files/malej.pdfIn PDF document text
- https://www.leadercaravans.com.au/application/third_party/ckfinder/userfiles/files/kasasab.pdfIn PDF document text
- https://tigapilar.com/upload/files/58120652064.pdfIn PDF document text
- https://swift-tw.com/lcc/upload/files/89632761289.pdfIn PDF document text
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/a8q23eva7qla5kugrq00ca3saa/33994730678.pdfIn PDF document text
- http://azizolace.cz/images/file/mikulozotojosu.pdfIn PDF document text
- https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/96665dec53e89f5cde92e1b67bb7d661/12160723520.pdfIn PDF document text
- http://opsir.eu/files/file/48592075090.pdfIn PDF document text
- http://one9five.com/userfiles/files/xavarin.pdfIn PDF document text
- http://thaide.org/userfiles/file/44401877956.pdfIn PDF document text
- http://kalkulacka-hypo.cz/userfiles/files/15772153066.pdfIn PDF document text
- http://cukiernia.eu/upload/files/74871663260.pdfIn PDF document text
- https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/eieb0pd85ogtott1riml9ipj4n/79861506376.pdfIn PDF document text
- https://ceccargiurgiu.ro/userfiles/file/pejife.pdfIn PDF document text
- https://cahayamimpi1.com/contents/files/garolazejekum.pdfIn PDF document text
- http://hla.vn/upload/files/92083592361.pdfIn PDF document text
- http://schodylux.pl/userfiles/file/sikuzofesu.pdfIn PDF document text
- https://uzsienis.cvzona.lt/resources/img/files/tosegakikokafezi.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_off0000cbf3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBF3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e405.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE405 | 17632 bytes |
SHA-256: 6ff6c40fbf959e5c49408515beb2ce18043d461f7c905d09951d4bae74aadbb3 |
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font_02_sfnt_off00011180.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11180 | 10844 bytes |
SHA-256: 0ab2af8beef1262f21a7626f142ecef280023a6ba5844b2175829da0a98baf77 |
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