MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, with heuristics indicating embedded JavaScript and a link farm pointing to compromised CMS uploads and disposable hosting. The embedded JavaScript likely facilitates malicious actions, such as downloading further payloads or redirecting the user to phishing sites. The presence of multiple external links, many pointing to PDF files hosted on various domains, suggests a distribution mechanism for malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://micruts.org/userfiles/file/somiseximutubilejera.pdf In PDF document text
- https://sfasg.jp/js/ckfinder/userfiles/files/24579361044.pdfIn PDF document text
- https://xn--espaoldetalca-lkb.cl/var/www/html/upload/file/31806926427.pdfIn PDF document text
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/76b6b3f25d6ac82ae43ff1d2bc4f0b7e/53344869025.pdfIn PDF document text
- http://uitetenindex.nl/images/uploads/69826290080.pdfIn PDF document text
- https://flavio-tonon.it/public/file/5258745563.pdfIn PDF document text
- https://extremedriveline.com/ckfinder/userfiles/files/meluxux.pdfIn PDF document text
- http://mgtofubbq.com/uploads/files/5442588946.pdfIn PDF document text
- http://www.themixchange.com/userfiles/files/59390733764.pdfIn PDF document text
- https://mvmdigital.gr/files/files/92616362209.pdfIn PDF document text
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/j687totd4g15h8o11hqgav5bqo/58850878446.pdfIn PDF document text
- http://cestovni-postylka.eu/userfiles/file/2031907201.pdfIn PDF document text
- http://phatnang.com/media/ftp/file/niripanunilupixitupaguli.pdfIn PDF document text
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/qep5f6u4jimo7hq5cj5ibjhuis/juzenewiserevote.pdfIn PDF document text
- http://uniquecharacters.com/upload/files/28914516360.pdfIn PDF document text
- https://eminentland.com/admin/userfiles/files/nedajeziv.pdfIn PDF document text
- http://crediramasrl.it/public/file/zugoxuxabilarumofesulekak.pdfIn PDF document text
- https://springkasteelhuren.be/userfiles/file/kegometonot.pdfIn PDF document text
- http://airelimpio.mx/img/editor/file/muzipuxapujixop.pdfIn PDF document text
- http://nj-rshb.com/v15/Upload/file/2021912257265992.pdfIn PDF document text
- http://american-security-inc.com/assets/ckfinder/userfiles/files/vojuvomadelup.pdfIn PDF document text
- http://unseretochter.com/images/file/pobekovax.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=trainzimulator+real+sound+downloadPDF 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_off0000de77.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE77 | 10616 bytes |
SHA-256: 55d3abbd4e2177291bd5ca2aaad5c4b749bcaf6c3e372e3e257fac7da6cf8881 |
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font_01_sfnt_off0000f6c7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6C7 | 17256 bytes |
SHA-256: d35673ae7f7e12e2c7a5c03de7594fa972298c46fbe4c1d20951b9db9ed561e5 |
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font_02_sfnt_off000123a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123A6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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