MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting it functions as a link farm. The primary purpose appears to be directing users to potentially harmful content or further stages of an attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/def0d082b98ffeaafeadc06cd4e0073a/43312783100.pdf
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/d14a5cc02305519b5ccc43aae3ae00f7/84179087367.pdf
- https://livresdarts.com/ckfinder/userfiles/files/bulonimovade.pdf
- http://caigeshi.com/uploadfile/file/2021091321581873499.pdf
- https://jurvamartin.com/userfiles/file/1374725533.pdf
- http://agapetown.net/ckfinder/userfiles/files/4672618465.pdf
- http://gwtcs.org/Content/uploads/files/6779469616.pdf
- https://n-vv.dk/userfiles/file/22375650799.pdf
- http://sungwoneng.com/upfile_editor/2021/files/55415632307.pdf
- https://eletroluz-al.com/_IMG/img_internas/file/womekiritejaxujowaza.pdf
- http://pinzimoniofiumicino.eu/userfiles/files/42770017628.pdf
- http://morard-mcf.fr/data/Files/50944466322.pdf
- http://wellfoto.cz/pictures/files/puzudum.pdf
- http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613643eb53cee---morapegowizutulowifa.pdf
- http://sprinter-lab.ru/content/File/nuribop.pdf
- http://bananamusic.tw/uploads/files/202109092044311106.pdf
- http://hum-lucknow.org/test/fckeditor/file/94030560119.pdf
- http://4grd.com/cmsimages/file/figudipikemepewidon.pdf
- https://nedimgame.com/calisma2/files/uploads/32578962755.pdf
- http://ephtour.com/FileData/ckfinder/files/20210911_C9D0437B019E3539.pdf
- http://goraku-sangyo.com/userfiles/file/xufomulup.pdf
- https://ptogel1.com/contents/files/jekisa.pdf
- http://gaudi.tw/upload/file/91409814888.pdf
- http://zhatuogz.com/uploadfile/file/folewodudax.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=gta+5+san+andreas+cheat+codes
- 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_off0000b714.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB714 | 16792 bytes |
font_01_sfnt_off0000cf26.binb2df1424972b23bf227593b931dac8116f526f6095456df4c1045eaf3a3573df |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF26 | 17716 bytes |
font_02_sfnt_off0000fdd6.bin8d8195faf9b07f98efb001a6877bb6b860241be5bacf74c1ae3ad273e6b8b18e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDD6 | 10504 bytes |
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