MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and the overall structure indicate an attempt to redirect users to malicious sites, likely as part of a spearphishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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=expand+on+the+topic
- https://invest.pl/userfiles/file/lidatazemine.pdf
- http://remont-elektro.eu/archiv/file/6540258180.pdf
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16099bb507943f---bixunatopepavedawo.pdf
- http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/9a8b95987ff67e4fd99a09854706c0d2/wigozofenapixe.pdf
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b93a16af2d6---xodonatefuvatovaxase.pdf
- https://delphin-bau.com/ckfinder/upload/files/besunozarukomukokelodadem.pdf
- http://pivotal-technologies.com/userfiles/file/61596660411.pdf
- http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a90a0a96278---60007602584.pdf
- http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607aca5b9f755---mefeluwo.pdf
- https://kaptenhoki.net/contents//files/gupegazul.pdf
- https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/3444d4811702158cc08cf9e7928dbad1/59673436326.pdf
- https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a2ec45fd8---gipowefoxunatorokenofexon.pdf
- https://krassimirtaskov.com/userfiles/files/98391912481.pdf
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16078ec7609065---88732093778.pdf
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608816db1f98b---neribuvanarodev.pdf
- http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a511dc8e0---tiravelone.pdf
- http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160866116d68f3---gowijawakosoj.pdf
- http://fcv-bo.org/data/fcv-bo/userfiles/file/zazabuxubewur.pdf
- http://washchienluoc.com/upload/file/patiforajadipemokifafutiw.pdf
- https://cafe-malaysia.com/contents/file/rafim.pdf
- https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/bab20e83408c8169cd71e82e14b45ca2/685246701.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_off0000e323.bin4b3fe10f0b41667ac3f1e79f5300950a37655d5f5662eace44e6cbf723b243fa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE323 | 10384 bytes |
font_01_sfnt_off0000fa85.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA85 | 16792 bytes |
font_02_sfnt_off00011297.bin0476721b8f8b7cc442459f3e3e124d1d80fba8f2b60a13754565d3994843753c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11297 | 17104 bytes |
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