MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, distributing numerous links across compromised CMS uploads and disposable hosting. These links likely serve to redirect users to further malicious content or phishing sites, consistent with a phishing or malware distribution campaign.
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 http://edu-family72.ru/content/images/uploads/file/viwedinegubanabore.pdf
- http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1614cd5858be72---71971513985.pdf
- http://prvugkh.ru/uploads/files/vuferabokox.pdf
- http://9jamail.com/FCKeditor/editor/filemanager/connectors/userfiles/file/muxedixunigabit.pdf
- https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/d30aba452392ce3046bfe96f87b3f2a1/42580581309.pdf
- http://brmhn.com/userfiles/file/20210912161203_dhu2b1.pdf
- http://npas.ru/pic/file/lamuzaninenaburasirezag.pdf
- http://kxnjl.com/userfiles/files/88655297483.pdf
- http://wxhsbl.com/ckfinder/userfiles/files/20210916_050104.pdf
- http://willettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/39333311802.pdf
- https://faguaflowers.com/images/admin/file/pavidulafoligosemakol.pdf
- http://madiran-cruduparadis.fr/ckfinder/userfiles/files/97946250790.pdf
- http://turchifiltri.com/userfiles/files/mejowikabig.pdf
- https://zegaoyun.com/calisma2/files/uploads/95633273624.pdf
- http://www.ocptecnology.com/admin/uploaded/fck/file/zarokekofijisemenese.pdf
- https://monyetjoget.com/contents/files/renimiteposevivepob.pdf
- http://osayit.com/images/file/34388034608.pdf
- https://bbox.ru/images/shared/file/pifovapupodixipitulilux.pdf
- https://morethancars.eu/uploads/edytor/file/15628260645.pdf
- https://viscom.bg/uploads/wysiwyg/files/juxutenopixo.pdf
- http://kfoodntea.com/dataroom/file/57939205665.pdf
- http://www.badischer-kunstverein.de/ckfinder/userfiles/files/35417782839.pdf
- https://jjcfurnituremaker.com/userfiles/files/74639491037.pdf
- http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1614358fc0e4c7---xagokurutakufa.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=chinese+call+of+duty+mobile+apk
- 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_off0000d062.binba672a2244b685dce8fba59f9d16c25673694b97e50d9974095675931e304a70 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD062 | 18132 bytes |
font_01_sfnt_off0000ffaa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFAA | 16792 bytes |
font_02_sfnt_off000117c1.bin896c2f9a2170cbc79879bb267e6240f80ee2ebfb051967755296b129801f2790 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117C1 | 11260 bytes |
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