MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The heuristic firings indicate that the document is a link farm, with many URLs pointing to compromised or disposable hosting, likely intended to redirect the user to a phishing site or download further malware. ClamAV detection further supports the malicious nature of this file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://nutrizionisti.eu/public/thread/risorse/file/zulakuzupiribado.pdf
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/6cc8236934d1ab7b1d41ae9e81f96f48/95730521833.pdf
- http://budapesticukraszdak.hu/userfiles/files/3986061046.pdf
- https://www.sonorisation-auxerre.fr/ckfinder/userfiles/files/19284208713.pdf
- https://rajaketiga.com/contents/files/73943055459.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161445823e722c---90293508098.pdf
- http://zagazzo.com/userfiles/file/88894819328.pdf
- http://saigondome.com/uploads/userfiles/file/buwegimoximunalezikoto.pdf
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/161476b07c87e5---zaxagikobiridowekala.pdf
- https://digireg.at/upload/todiwe.pdf
- https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/2c10fbfd3b01ee30fae87ed1abc00139/17176683422.pdf
- http://recepti.plovdivweek.com/js/ckfinder/userfiles/files/tafibijeri.pdf
- https://bachson.net/upload/file/63932279580.pdf
- http://carshopm.com/js/upload/files/vawefudefaruxudo.pdf
- https://transmar.biz/ckfinder/userfiles/files/44869697288.pdf
- http://bjaimama.com/data/upload/2021/09/file/202109190438309649.pdf
- http://ahknchem.com/upload/files/desolareki.pdf
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/467197ca092341c9b220e1d7fc7659bd/tegatavodamop.pdf
- https://sunnyvale.com/wysiwygfiles/file/divewawuwepexo.pdf
- https://giaynangchieucao.com/userfiles/file/34657994685.pdf
- http://travelshops.pl/userfiles/file/fujorijinixuk.pdf
- http://aurangabadptti.com/ckeditor/ckfinder/userfiles/files/61093790159.pdf
- http://saatgaamkansarasamaj.com/admin/uploads/files/13804635962.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=123movies+captain+america
- 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_off0000d7e0.bin2b258fd9b96e83e108714316cc7aa9bb2578357c8f88fbe24703ef7a2949a595 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7E0 | 19008 bytes |
font_01_sfnt_off0001099f.bin1510ee22616320f90708ac9b1180b129f9220313d4b47de7b7b1678117f7aea5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1099F | 10800 bytes |
font_02_sfnt_off0001229d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1229D | 16792 bytes |
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