MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised CMS upload directories, suggesting a phishing or malware distribution lure. The presence of PDF-specific heuristics like 'PDF_URI' and 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports the attack pattern of directing users to potentially harmful external content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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://catamma.ru/uplcv?utm_term=free+professional+business+powerpoint+templates
- https://chulintemple.org/CKEdit/upload/files/kutojubovanobef.pdf
- http://neoneophytou.com/ckfinder/userfiles/files/wenorazitojejumi.pdf
- https://accuratesearch.com/userfiles/file/xudupibigeketew.pdf
- https://lbjgold.in/ckfinder/userfiles/files/sonuvoti.pdf
- https://mercerapparelss.com/userfiles/files/tivuxuxavisadawoduruguj.pdf
- http://alpanelektrik.com/depo/sayfaresim/file/5938896087.pdf
- http://gayaarchi.com/userfiles/file/20210929180215.pdf
- http://dui-antidote.net/images/userfiles/file/luralukirox.pdf
- http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/3u3763rs3075lmpcnovk094cc4/39963003468.pdf
- http://www.firstpages.eu/app/webroot/files/userfiles/files/votubisabikerupopirorij.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/7db6rook8pcfp42onpkeslsbo9/basexisujaxaxikewazus.pdf
- http://meskerjager.nl/media/files/pidonenofulipiwol.pdf
- http://amsuatrust.org/survey/userfiles/files/xofizujelazasotaxepom.pdf
- http://mitcostruttori.it/userfiles/files/tarabuvojinerisebutoji.pdf
- http://kk-gorenjska.si/uporabnik/file/29168242928.pdf
- http://sunpix.ru/img/lib/file/fumenanotuzurekeluraxexuj.pdf
- https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/10f84454e7559742decc2f316670f0fa/gutubizesanunepigovujuda.pdf
- https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/3bbjk5df8vf4dupdfu3l2qq3ma/92953760286.pdf
- https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/4ce883a092c3d12627d40100827a1c55/54440508568.pdf
- http://mid-europe-ex.com/images/blog/file/58251491283.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613829b881eba.pdf
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615240faa4c93---nupale.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_off0000e51a.bin21ff3980a9fde1ae88d782546c85db8e1dfa757526f0e63870c3b2e6d3eefbce |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE51A | 10824 bytes |
font_01_sfnt_off0000fdde.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDDE | 16792 bytes |
font_02_sfnt_off000115f0.bin9781c2f0a8acf55c8760e4e5e9bb4222a6c4b916c4ced7a7b336fcd789180505 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x115F0 | 18116 bytes |
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