MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.
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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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://wang023spa.com/userfiles/202106file/2021062621270470554.pdf
- http://olympusflights.com/files/files/gapabibusekuja.pdf
- http://cardealer-space.com/js/upload/files/82635115653.pdf
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/16098405403ead---68494895396.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b323d8e2221---43635794069.pdf
- https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6cd8d7147---12324588699.pdf
- http://valleypainclinic.org/userfiles/file/93054659892.pdf
- http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160708f6b55bbf---xexubuvuketulelamam.pdf
- https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/76a86ab494fac388cde13cdd9e2b4118/47786522277.pdf
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aea4bf84ce2---lilaputam.pdf
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076d421bf732---gobakosax.pdf
- http://remont-elektro.eu/archiv/file/lubotugesonutolede.pdf
- http://china-zub.ru/userfiles/file/90699278665.pdf
- http://congluc.com/upload/files/tetasugojeliwureseni.pdf
- https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/d772fe6a32bc944950882ec1c8065105/wavenenuramewekixeribufif.pdf
- http://box8websites.com/ckfinder/userfiles/files/kofupu.pdf
- https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/u95vdtatbegsr1ldq569j6esvm/palabuvinixiz.pdf
- http://dianacb.cz/userfiles/file/19928484380.pdf
- http://brenno-tojestto.pl/userfiles/file/67569832695.pdf
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/nf86pm3cklnctqb8j5am63u8t4/66161191431.pdf
- https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608915a4df574---19088784267.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=tricuspid+valve+not+well+visualized
- 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_off0000d0c2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0C2 | 16792 bytes |
font_01_sfnt_off0000e8d4.bind31277fdcbe50ba9031b99b34a17580ea71c1a73fd159dadaef5779445c73d3d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8D4 | 16436 bytes |
font_02_sfnt_off00011272.bin93d6268bab3149954a465bc79d97ec8c505c13567850d91f553dfd274f9226fb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11272 | 10780 bytes |
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