MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a large number of external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or serving a malicious payload via the embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://kimsanghun.com/upload/userfiles/file/2021971522572532.pdf
- http://dispensapertutti.com/userfiles/files/16467978972.pdf
- http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161369cd200e2a---654241986.pdf
- http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613db85f9a4b2---kutegawez.pdf
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/burefuripokadake.pdf
- https://jackinthegym.com/uploads/files/202109011126261549.pdf
- http://inwama4.vn/webroot/img/files/58626975449.pdf
- https://imahima.xyz/js/ckfinder/userfiles/files/nifimilozimosedemutafe.pdf
- http://blfimmobiliare.com/userfiles/files/78906617593.pdf
- https://hr-serdahel.hu/images/file/zinoveko.pdf
- http://www.martiusstaden.org.br/js/ckfinder/userfiles/files/38424658630.pdf
- http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16140c02b63f29---vedunu.pdf
- https://bodzlomu.com/userfiles/file/77923515540.pdf
- https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/prmf9qms9resngjlug4mhmmnnj/52718006020.pdf
- https://www.idd.no/ckfinder/userfiles/files/66752604309.pdf
- http://xn--b1adrijbbb.xn--p1ai/upload_picture/sawufimiwuri.pdf
- https://tele-video.ru/upload/files/dukatugunukosofuzejadajaf.pdf
- http://rrbrentacars.com/files/others/joxopotimojep.pdf
- https://serrechevalier-skifun.com/imagesfile/56349353863.pdf
- http://trungtamsangloc.vn/uploads/ck_upload/files/90218513356.pdf
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/161301796b4ef4---83323941260.pdf
- https://musikkursus.dk/userfiles/file/fozatixowozisadagame.pdf
- https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/9v0c9t2nluitnelrf1poo091mm/sasuwezede.pdf
- http://easytravel63.ru/ckfinder/userfiles/files/nebolasoluwutilemezisa.pdf
- http://okudshava.ru/userfiles/file/zurexivofogebik.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=new+season+of+boku+no+hero+academia
- 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_off0000cb2b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB2B | 16792 bytes |
font_01_sfnt_off0000e342.bincdb0686f865600caae281087365f9c6c4a50b837468443e8f5e34a8c0e655854 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE342 | 10992 bytes |
font_02_sfnt_off0000fcac.bina87b31a92648dfee6ee3665535cf0f9f893cc16d88541b0f87804a660f401b99 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFCAC | 17644 bytes |
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