MALICIOUS
196
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 an ML classifier, indicating a high likelihood of malicious intent. The document employs a social-engineering lure, instructing the user to install a browser extension or update, which is a common method for distributing malware or stealing credentials. While no scripts were explicitly extracted, the presence of numerous external URLs, some hosted on compromised CMS platforms, suggests a phishing or credential harvesting attempt. The file's structure and the embedded URLs point towards a phishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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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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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 https://szabobuszrendeles.hu/files/files/15510832083.pdf
- http://hasicimosnov.cz/foto/Image/file/tabibizevizelerawugozigeb.pdf
- https://ymvii.com/admin/upload/files/kipix.pdf
- http://alatasfilms.gr/ILC/img/file/85903570973.pdf
- http://kelvista.lt/images/files/xuruvuxalav.pdf
- https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/22845f85523cb71d2d677d036b2dea19/zonavu.pdf
- https://bakwanudang.com/contents/files/zibazumekurebegameb.pdf
- https://mandarinkinesiska.com/userfiles/file/50428752699.pdf
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161465e940750e---27715448611.pdf
- http://kccmaul.com/files/files/dutakatipozexafejasujokun.pdf
- http://gruppocreta.com/userfiles/files/50283777653.pdf
- http://onlinemidias.com/ckfinder/userfiles/files/wibatudejaje.pdf
- http://brkvinc.com/userfiles/file/tanidirezatufivazadusa.pdf
- https://roofmed.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161413e9f46656---pajaniguvikewosijapov.pdf
- http://polskienarty.pl/data/aktualnosci_imgs/file/riloxevifoketofobogegaru.pdf
- http://aias.pnu.ac.th/ckfinder/userfiles/files/pebew.pdf
- http://avanti-kuhni.ru/upload/files/31860041845.pdf
- https://arte-salon.ru/upload_picture/miguvuto.pdf
- https://aawyx.com/sites/default/imageuser/file/12266148553.pdf
- https://hoatuoi360.vn/uploads/files/13278934733.pdf
- https://mobilpetrol.olajpark.hu/files/files/30485796611.pdf
- http://ctmmaximoravenna.com/ckfinder/userfiles/files/xigerizovawavig.pdf
- http://hkalc.com/userfiles/motimamipalarezunokazowul.pdf
- https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/1f9d46b403981cf3c1314b1d512da0f8/73529576917.pdf
- https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/a3919d99d545f2cc6aebbd927ae71318/jufopuxopa.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=install+office+2016+on+chromebook
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d80f.bin9054a0b3d20d628b892b4748848953161fdb8085900cc82f51bf760d44287759 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD80F | 17920 bytes |
font_01_sfnt_off00010688.binef5fcd477761462db2f0d5500a2d98c9878466868f70d38348606c6e07e41311 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10688 | 11248 bytes |
font_02_sfnt_off000120d0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120D0 | 16792 bytes |
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