MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The PDF contains numerous links, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The presence of multiple external URIs and a link farm points towards a tactic of directing users to potentially harmful external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://dhcom.vn/userfiles/file/gipefigofumazagarukowep.pdf In PDF document text
- http://promador.pl/userfiles/file/wajabaguk.pdfIn PDF document text
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1608f1f07745b3---7550073464.pdfIn PDF document text
- http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160bf58c28c897---gorowefitos.pdfIn PDF document text
- https://danielstrehlau.com/userfiles/file/18461063382.pdfIn PDF document text
- http://daoltrading.com/userData/board/file/fipomudonunetulak.pdfIn PDF document text
- https://zoldlepes.hu/userfiles/file/9432108092.pdfIn PDF document text
- http://askort.pl/Upload/file/19165932222.pdfIn PDF document text
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f365a662921---gixinopuzekibevewijedu.pdfIn PDF document text
- http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a455e822e00---xagopubevovodinemada.pdfIn PDF document text
- https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/7f4ab757a15e9c2657430b8009282741/5417651199.pdfIn PDF document text
- http://bukvoznaika.ru/ckfinder/userfiles/files/pogiruzikojuxiwag.pdfIn PDF document text
- https://duongthuy.net/userfiles/file/39579419799.pdfIn PDF document text
- https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/ab1e6ad7e9d9b64ce8059bddf28c3683/jixujijagunupupinowuli.pdfIn PDF document text
- http://mobilni-kadernictvi.cz/files/file/29589741767.pdfIn PDF document text
- http://allprintusa.com/admin/images/file/fuzumilibeduwo.pdfIn PDF document text
- http://amon-syotengai.com/userfiles/file/7872526117.pdfIn PDF document text
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/dhh80lpjn4h1c0vrl32pp281us/gotazedodulo.pdfIn PDF document text
- http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/3m875l18hr60lhqrg96q8u9la8tejlnn/wawenipevasuz.pdfIn PDF document text
- http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/gukokaxeko.pdfIn PDF document text
- https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/e36459112ea49c40622d5966a52ca3ce/disutavomifiminobax.pdfIn PDF document text
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffc4d85bf8---27236717910.pdfIn PDF document text
- https://gaziemirkentkonseyi.com/upload/files/34554734126.pdfIn PDF document text
- https://progin.ch/ckfinder/userfiles/files/1317000529.pdfIn PDF document text
- https://pavimenti.pl/web/uploads/files/dipogiwoxodo.pdfIn PDF document text
- https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d00ebe09f7---rapawagerilepa.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=relative+clauses+exercises+for+beginners+pdfPDF link annotation
- 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_off0000d9a3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9A3 | 17064 bytes |
SHA-256: 6563ba9c0cef92a4e5d1c8db12ae63c50c8738d63cfa09fdc2197f8178f0ec50 |
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font_01_sfnt_off00010566.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10566 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011d7d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D7D | 11248 bytes |
SHA-256: 13a954764eef8dfdb6462c01ec83d8fa1fa0eea3d77401d1cc95fe6b8e0859dc |
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