MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was identified as malicious by a machine learning classifier and ClamAV, flagging it as a phishing trojan. Heuristics indicate it functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure suggests an attempt to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://opuspoint.com/ckfinder/userfiles/files/jakogoxofufaz.pdf In PDF document text
- http://aan.kz/ckfinder/userfiles/files/xifiredozedebifisizid.pdfIn PDF document text
- http://bckvalumni.org/userfiles/file/6615467670.pdfIn PDF document text
- http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/f95cd56a294f62defc5132576dbbcbb9/64303612043.pdfIn PDF document text
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fd1079a480---15966140141.pdfIn PDF document text
- https://abriganature.centralcms.cloud/galeria/files/xegimupo.pdfIn PDF document text
- https://revive.fashion/upload/files/92271244081.pdfIn PDF document text
- http://tandartsindex.nl/images/uploads/46531596126.pdfIn PDF document text
- http://patrick-jardinage.fr/ckfinder/userfiles/files/jizonijiwulavakopat.pdfIn PDF document text
- https://pelicanfinancialnetwork.net/ckfinder/userfiles/files/dapulokadetobega.pdfIn PDF document text
- http://th-hl.com///upload/files/34098916755.pdfIn PDF document text
- https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/f8c81e6db5add61bd4ca0bb637cf3026/fujilupafe.pdfIn PDF document text
- http://toroisg.com/public/images/files/wupigefupofomapalikov.pdfIn PDF document text
- https://giga-tronics.com/userfiles/files/18797483309.pdfIn PDF document text
- http://riccaassociati.eu/userfiles/files/lewexewizonowujen.pdfIn PDF document text
- http://clean-ecology.com/Upload/files/nokunofapujupodexu.pdfIn PDF document text
- http://taiwanquinoafamily.com/shopadmin/upload/files/50550821769.pdfIn PDF document text
- http://panziofabian.hu/fck_kepek/74351444256.pdfIn PDF document text
- http://handinks.com/ckfinder/images_store/files/jebefigupazanituxip.pdfIn PDF document text
- http://marchmont.ru/imgs/file/62605098460.pdfIn PDF document text
- http://jd6618.com/jd6618/file/2021-9/file/LwpCms2021_09_17_06_31_43_8384.pdfIn PDF document text
- https://armour-technoz-ca.otzol.net/ckfinder/userfiles/files/55351331457.pdfIn PDF document text
- https://vico-inmobiliaria.com/ckfinder/userfiles/files/sipexize.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=very+hard+riddles+and+answers+for+adultsPDF 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_off0000dcc3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCC3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f4da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4DA | 10720 bytes |
SHA-256: 90c5153018ab1c52908fa3102f3a081a520d20a425a491c1bbb8e71d45c9bc0d |
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font_02_sfnt_off00010d78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D78 | 17928 bytes |
SHA-256: e0085517fc6acb8fdcb68dea592b244cbf743f9c77c1d328994e891cc271ea34 |
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