MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users to malicious content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL analysis strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://polistirendecor.ro/app/webroot/files/userfiles/files/20553519575.pdf
- https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16111cb4821961---14352618005.pdf
- https://panama4d.com/contents//files/2221045511.pdf
- https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/9dcbfb59007439a8e9352ce0cc15cde6/2404933872.pdf
- https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/1r4u1igb89htn8tio48o71skua/sedofure.pdf
- https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160980af1c404c---dojiwujupogujovemesipoku.pdf
- http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b28e96f18c3---56120691639.pdf
- https://regaluxiluminacion.com/uploads/assets/file/39481956215.pdf
- http://chromavials.com/d/files/finekuda.pdf
- https://gagiongvitgiong.com/ckfinder/userfiles/files/tizajokibutoluriko.pdf
- http://ncdesign.it/userfiles/files/botobaxudas.pdf
- https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16095b28b39c22---9051671571.pdf
- https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/7709946e62bfbb08c8581ff2e82db09c/jisawurudagibaki.pdf
- https://accuratesearch.com/userfiles/file/piwux.pdf
- http://yfatc.com/userfiles/file/majabojiti.pdf
- https://airshow-bg.com/file/defotowepijinekalir.pdf
- http://smithmaloney.com/clients/3/32/32eae1a42220421eddab78da2f55685d/File/58831366662.pdf
- https://27061010.com/uploads//files/202108040251222513.pdf
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ac57f76efb4---10653678405.pdf
- http://abwgulfport.com/uploads/files/zabokaxuvimuvolugebu.pdf
- http://mondoacquapiscine.com/userfiles/files/nusukaw.pdf
- https://icon-studios.com/userfiles/file/rufirobifaravoroduwi.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=determining+empirical+and+molecular+formulas+worksheet+answers
- 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_off0000cda6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDA6 | 16792 bytes |
font_01_sfnt_off0000e5bd.bin898f737aa2f6024262825cbe84abe5ea4852dbd93ade45ee4344aaa43dee5d31 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5BD | 11348 bytes |
font_02_sfnt_off0001001d.bin333d0a64a772c50770a142e9dfff5de9bf080bee15a7424c6ae16b1ac3abb1e5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1001D | 18300 bytes |
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