MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified the PDF as a link farm pointing to compromised CMS upload storage and disposable hosting, with multiple distinct hosts and UTM parameters suggesting a phishing or malware distribution campaign. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://zentrumok.com/userfile/files/46801442900.pdf In PDF document text
- https://pepinieramontana.ro/ckfinder/userfiles/files/84717163298.pdfIn PDF document text
- https://aokman-drive.com/d/files/karizopomu.pdfIn PDF document text
- http://keemunblacktea.cn/uploads/file/171357493780.pdfIn PDF document text
- https://licorne-hotel-restaurant.com/userfiles/file/11047419567.pdfIn PDF document text
- http://shortguycentral.com/ck_uploads/files/wadekipul.pdfIn PDF document text
- http://parateam.cz/file/23380460478.pdfIn PDF document text
- http://ranjitabiswas.com/userfiles/files/61402306064.pdfIn PDF document text
- https://capital-publishing.com/ckfinder/userfiles/files/nofepejidemubap.pdfIn PDF document text
- http://telek-trans.hu/editor_up/76806519486.pdfIn PDF document text
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147443705195---9806618977.pdfIn PDF document text
- http://foreverymuslim.net/home1/forevev3/public_html/foreverymuslim/upload/file/dipukizepa.pdfIn PDF document text
- https://suacuacuontoanphat.com/upload/files/7259897679.pdfIn PDF document text
- http://oikoscoccatoarchitettura.com/userfiles/files/zejanizemazopakoku.pdfIn PDF document text
- https://hsse.hssanesteban.cl/files/xapanabosavisebelokarolas.pdfIn PDF document text
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f88ee6b0a9---98574577923.pdfIn PDF document text
- http://www.vinoplaza.nl/img/upload/files/61381715561.pdfIn PDF document text
- https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/2d67691983facbefcc4e3d062c547e22/napekoz.pdfIn PDF document text
- http://insei.eu/userfiles/files/fewomuvutakepatugoba.pdfIn PDF document text
- http://ssp.by/var/upload/mubiv.pdfIn PDF document text
- https://coil.hk/upload/files/kewasiriguzuruxuv.pdfIn PDF document text
- http://hamyarsanatco.com/ckfinder/userfiles/files/wapugarosib.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=t+test+pairwise+comparisonPDF 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_off0000b0ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0AD | 16632 bytes |
SHA-256: ca2c9b4dc4c6f4aa7a559322be4a88859575860e0703315963ea305e41825a70 |
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font_01_sfnt_off0000db27.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB27 | 10536 bytes |
SHA-256: 80f5403089c637b1581b7a4752b2e81c209b4258ff2d515ecfb0dc693dc02869 |
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font_02_sfnt_off0000f343.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF343 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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