MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF was flagged by multiple heuristics as malicious, including a machine learning classifier and ClamAV detection. It contains a link farm pointing to numerous websites, many of which appear to be compromised CMS uploads, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farm structures indicates an attempt to redirect the user to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://pistant.ru/uplcv?utm_term=theories+of+public+administration+book+pdf PDF link annotation
- http://maroba-zirndorf.de/file/bikajeruj.pdfIn PDF document text
- http://accessiblevehicleservices.com/userfiles/file/retisonenafoxim.pdfIn PDF document text
- http://clarksville.net/wysiwygfiles/file/pedifigujavoteva.pdfIn PDF document text
- http://riskhedgetech.com/uploaded/file/1836358247609b604aeb5b2.pdfIn PDF document text
- http://aarogyamedico.com/userfiles/file/31206817366.pdfIn PDF document text
- http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/7972be4036c8b478e3a059b201ef2557/bixidowe.pdfIn PDF document text
- https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607830daeca1e---7141570369.pdfIn PDF document text
- http://aodaibooking.com/FileData/ckfinder/files/20210621_D9377629FFF379FC.pdfIn PDF document text
- http://boxerdapolenta.com/cmsimple/images/file/46578735759.pdfIn PDF document text
- https://anaksemut.com/contents//files/lajutapoderexiguwajorix.pdfIn PDF document text
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607719087cd63---tewuvopekiwudibosopozaf.pdfIn PDF document text
- https://www.alapan.org/fckimages/file/pufilikogenenoguwabozuw.pdfIn PDF document text
- http://nrnchina.com/test/images/ckfinder/files/68713655585.pdfIn PDF document text
- https://ludifrance.fr/userfiles/file/55559032457.pdfIn PDF document text
- https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/d5e3f8fcac48e45333d99da6c19e1b4f/11142760462.pdfIn PDF document text
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba365138ddc---xakidivuzij.pdfIn PDF document text
- https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607df1ec6229e---2552344257.pdfIn PDF document text
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c6bb3809245---3211509771.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_off0000f394.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF394 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010bab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BAB | 11180 bytes |
SHA-256: 782a72809f20a4219482e703de8c55b9968a0b14fb9230541f6a4f58bc64135f |
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font_02_sfnt_off00012568.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12568 | 17284 bytes |
SHA-256: ad1ed2b6dc7ec0dd62742ed113e4422280747c9dc7100bf57e88e8e9fd3bcfe2 |
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