MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, with several URLs pointing to compromised CMS upload directories. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous external links suggests a redirection mechanism to potentially malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://sentralperdana.com/file/jujadoxotabobesogekumaba.pdf
- http://www.serenissimaservizi.com/files/62274854464.pdf
- https://giaynangchieucao.com/userfiles/file/dakupolugiwon.pdf
- http://pelesiuvalymas.lt/i/File/mitafipotinibud.pdf
- http://covina.crazyrockinsushi.com/uploads/files/64616875212.pdf
- http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16137299f84314---rajerutujorajejova.pdf
- https://lbjgold.in/ckfinder/userfiles/files/86448376303.pdf
- http://toanlinh.vn/upload/files/towanujokadofibit.pdf
- http://changrung.com/ckfinder/userfiles/files/rujuxagipopogevudu.pdf
- https://thefencedocumentary.ca/adminfiles/file/66203270055.pdf
- https://estudiowebcolombia.com/ckfinder/userfiles/files/35630833851.pdf
- http://weiddy.com/uploads/files/202109050714298677.pdf
- http://robbes.nl/media/files/pemin.pdf
- https://interativacorretora.com/fotosempresa/files/losegebowodevaloxir.pdf
- https://bistakalikotenetwork.com/userfiles/file/68867935545.pdf
- https://trinityautorepairs.com/uploads/files/wadokekunowusagubeluxetur.pdf
- https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612f59f60a9cd---sosajuvixiralaninup.pdf
- http://exmar.it/foto_fck/file/xisuti.pdf
- https://martas.vodrsport.cz/uploads/files/63289705795.pdf
- https://reha.bg/content/upload/file/80654692696.pdf
- http://tuanayapim.com/rsm/files/veragolazixikarunu.pdf
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136e56e112d6---43081563161.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=uphill+rush+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_off0000d5a7.bin88d63031537dd2fef206ab0960e994dce5d154235338e2bc623a2f8e94d9e42a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5A7 | 18088 bytes |
font_01_sfnt_off00010452.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10452 | 16792 bytes |
font_02_sfnt_off00011c69.binf16425b3a293566802b4caaa1184d3abca7b29c80f59e47156cfaff11785c1c7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C69 | 10096 bytes |
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