MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by multiple heuristics as malicious, including a machine learning classifier and ClamAV, which identified it as a phishing trojan. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no clear textual lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://michardardillier.com/ckfinder/userfiles/files/27544019221.pdf In PDF document text
- http://csc010.com/userfiles/file/20210809124411_5cpwnm.pdfIn PDF document text
- https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/924a8e52f8be8d81bab0e3180b886d98/nonimekojejopijidufo.pdfIn PDF document text
- https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/a94f4ac2703dd77eb1c573914a471acf/gaterekikegumebivinenalum.pdfIn PDF document text
- https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1609828477c981---bakozelojaxeruradumiwuvil.pdfIn PDF document text
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/b3141acec87dc7a2980bf1c90ccbe069/rukumofegenebaxomu.pdfIn PDF document text
- http://bioident.pl/photos_fck/file/64626214033.pdfIn PDF document text
- https://mcq-exambd.com/app/webroot/ckfinder/userfiles/files/buxon.pdfIn PDF document text
- https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/725582c2d0b8db0511a600bf565e7a3c/69148654054.pdfIn PDF document text
- http://bbfrontedelmare.com/userfiles/files/taxeleborazuxox.pdfIn PDF document text
- http://morebricks.com/ckfinder/userfiles/files/77524939966.pdfIn PDF document text
- http://andlupa.com/userfiles/file/34775585336.pdfIn PDF document text
- http://svx.su/ffile/file/71361045253.pdfIn PDF document text
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2797f389d7---10066550529.pdfIn PDF document text
- https://soportedevida.mx/ckfinder/userfiles/files/92522397182.pdfIn PDF document text
- https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/juq5tpoq4gkblje4kcc30e7g6o/tozidut.pdfIn PDF document text
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160742867c567e---21432479619.pdfIn PDF document text
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/26d3b4e5c097ac9a02d777237802556b/zakejoxemolusi.pdfIn PDF document text
- http://a2itsolutions.com/chop/multimedia/userfiles/file/10930292114.pdfIn PDF document text
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1610e8efd274d5---34067455151.pdfIn PDF document text
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/1v3hj53iv7halh3or51gabdgt1/forepavesomi.pdfIn PDF document text
- http://blackivy.pl/userfiles/file/78337355462.pdfIn PDF document text
- http://fouladsazanco.com/Upload/file/pelevizisusemeru.pdfIn PDF document text
- http://fvv-hohenfelde.de/sites/default/files/files/38684228533.pdfIn PDF document text
- http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a49e171f3---47680306369.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=bios+update+msi+motherboardPDF 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_off0000e7be.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7BE | 16864 bytes |
SHA-256: d9eb32ff2d2bd366ba5bb269d6352517558ed0fdbb6d5e024148100887151b03 |
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font_01_sfnt_off000113da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113DA | 10800 bytes |
SHA-256: 2cbd3c4899cd54b5c0f0ba600acdc5f2e26b8e9d46c57662c59122757f2a21a2 |
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font_02_sfnt_off00012c97.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C97 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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