MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm. The primary purpose appears to be directing users to external, potentially malicious, websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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 http://veterinariogiardinelli.it/userfiles/files/77668290307.pdf In PDF document text
- http://tagsu.com/attachments/fckattachments/file/82883255113.pdfIn PDF document text
- http://niezapominajkowo.eu/userfiles/file/87768654472.pdfIn PDF document text
- https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/sfjd7e5enit8npdrpbbfh52td0/wefudonitalarus.pdfIn PDF document text
- https://3drm.bg/uploads/pictures/files/65418056359.pdfIn PDF document text
- https://keyword-lda.pt/site/upload/file/67103538703.pdfIn PDF document text
- http://dermalab.pl/userfiles/file/ridelemezulivusotaw.pdfIn PDF document text
- http://rkenterprisesonline.com/FCKeditor/file/38431987657.pdfIn PDF document text
- http://dga.gr/ILC/img/file/17048637901.pdfIn PDF document text
- http://fitsiluet.cz/data/file/zusovoliwaxabir.pdfIn PDF document text
- http://bibrka-school.org.ua/ckfinder/userfiles/files/70428703784.pdfIn PDF document text
- https://dom4m.lv/userfiles/files/66061414956.pdfIn PDF document text
- http://onlinetalk.jp/app/webroot/img/fckfiles/file/jazininorogoveb.pdfIn PDF document text
- https://muratay.nl/userfiles/file/77622330608.pdfIn PDF document text
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/d5e2d05cad8281b91d58633353f97fd3/82357299488.pdfIn PDF document text
- https://newtop-eg.com/userfiles/file/80372237623.pdfIn PDF document text
- http://chatyzvule.cz/uploads/77440744068.pdfIn PDF document text
- https://advantage.ee/media/contents/file/tokelusewuzakubaxoxo.pdfIn PDF document text
- http://automsystem.com/UploadFile/file/20210915155641843.pdfIn PDF document text
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16140167239437---kugeb.pdfIn PDF document text
- https://anup.bo/images/files/60264996079.pdfIn PDF document text
- http://top-caster.com/userfiles/file/31162187330.pdfIn PDF document text
- http://www.evisiontiendaonline.com/ckfinder/userfiles/files/8982689321.pdfIn PDF document text
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131a1dbaaed2---putubidanujamudid.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=harry+potter+and+the+half+blood+prince+putlockersPDF link annotation
- 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_off0000d591.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD591 | 17508 bytes |
SHA-256: 5c58c952681d993a1a93de90d73c2ff8d8b9a4c60dc6c794fa79e5940d05786a |
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font_01_sfnt_off000102af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102AF | 11152 bytes |
SHA-256: 3544aedb2aa95daa441860820d4ea7bf117010b5746d0da4147f29c3cf735014 |
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font_02_sfnt_off00011c6a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C6A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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