MALICIOUS
224
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 ML classifiers, indicating a high likelihood of malicious intent. The embedded JavaScript and numerous external links, many hosted on compromised or disposable domains, suggest it is designed to lure the user into downloading a malicious payload, likely disguised as a browser update or extension. The heuristic 'SE_BROWSER_INSTALL_LURE' strongly supports this, indicating a social-engineering tactic to compromise the user's system.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 9
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://kaizousha.com/js/upload/files/diviwotimeligaruveve.pdf In PDF document text
- https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/3ab8576a4317666e668f53a721234521/zuzakozuvumonuxikozowepun.pdfIn PDF document text
- http://ei-windykacja.pl/upload/file/5158598303.pdfIn PDF document text
- http://oryginalnedekoracje.pl/userfiles/file/refevi.pdfIn PDF document text
- https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/c427aba80be2fb23849029261693c2c8/dubofoje.pdfIn PDF document text
- http://rjbmachinery.com/d/files/62882975220.pdfIn PDF document text
- http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160821883a7fa2---puxaduke.pdfIn PDF document text
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6794278c9---38637404465.pdfIn PDF document text
- http://droneducational.com/admin/userfiles/file/5801477614.pdfIn PDF document text
- https://orrizon.ru/images/file/fabotewenawerenale.pdfIn PDF document text
- https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608126abb51b6---geruxerixilikutoveduxot.pdfIn PDF document text
- https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/eh318b7v6moopnvji30k4bg9n2/mopawebuvuwosezu.pdfIn PDF document text
- http://lex-ter.ru/admin/ckfinder/userfiles/files/wifuvosisetuboxemijefewif.pdfIn PDF document text
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608414e3ded4e---99329071001.pdfIn PDF document text
- https://pavillonwohlen.ch/userfiles/files/80937244678.pdfIn PDF document text
- http://azbuka-d.ru/ckfinder/userfiles/files/xeladedikesajupeketuwenob.pdfIn PDF document text
- http://szakkepzosiklos.hu/upload/file/deremilekazekesofolo.pdfIn PDF document text
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/rv4309e6j0bj7qishjjt7mrub3/68836470790.pdfIn PDF document text
- https://bestcoloringpages.com/userfiles/file/wajejitej.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609786353fb26---fonedorezobezedub.pdfIn PDF document text
- https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/597455e21019ec46c33743e8e3bf65c2/79351313610.pdfIn PDF document text
- http://dok-vo.ru/userfiles/file/50750397544.pdfIn PDF document text
- http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/114780256960983f025b79b.pdfIn PDF document text
- http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/b150c5d08bb59210c7cd27aec457ae99/velepobovomanuxedituto.pdfIn PDF document text
- http://envisystem.com/upload/userfile/files/9493149529.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=crack+para+office+2013+professional+plusPDF 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_off0000e87a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE87A | 21020 bytes |
SHA-256: 767f567fc8f75b10877114fda80237cd3b6b9d37b44a10373d9fd7485493cdbf |
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font_01_sfnt_off00011af3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11AF3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001330a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1330A | 11064 bytes |
SHA-256: a713763e2b45abc11d2a7a75799a8d94a773093509553d2a1406816b03d3299f |
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