MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for malicious PDFs. It also contains a large number of external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9959
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://abaj.cz/UserFiles/File/92360519275.pdf
- http://grandrosso.com/js/upload/files/11157362891.pdf
- https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/16115c8e511148---ledesurikitoxerakufuse.pdf
- http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec4b82c5ed---zesakifimifasaw.pdf
- http://artediapharma.com/upload/files/58400350581.pdf
- http://allseasonsart.com/uploads/fck_uploads/file/76050084955.pdf
- http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f98449e1d7---pexaxekugadix.pdf
- https://chaplains-camps.org/upload_picture/file/54654651412.pdf
- https://area34.info/wp-content/plugins/super-forms/uploads/php/files/hgv2n6shat8pqr1dms6oh6qvp7/28579478973.pdf
- http://12shio5.com/contents//files/lozajubatadoredese.pdf
- http://kodemari.info/data/files/25680849444.pdf
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2b5128ef14---naraguv.pdf
- https://hr-serdahel.hu/images/file/54880778693.pdf
- http://bbpcosmetics.com/admin/upFiles/2021-5/file/zevewosopokuwuso.pdf
- http://amadpich.com/userfiles/file/49965801056.pdf
- http://cc-loges.com/uploads/file/sosuredevarekixorijipoted.pdf
- https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/7ihdf30e7cem7vcqgjj341fhdo/xixiwozumipamulurujin.pdf
- http://pusancard.com/userData/board/file/zifekuruzexuvuvasi.pdf
- http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6899cea1bb---waseguduguro.pdf
- http://joy05.com/_UploadFile/Images/file/datararenazubalu.pdf
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e51a08968b5---44597717338.pdf
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16074f99eb6bfc---78774087541.pdf
- http://www.alcera.ca/userfiles/file/naxuvofikapobizijas.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=cuaderno+de+actividades+para+primer+grado+para+imprimir
- 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_off0000b454.bincf81092e0818bf3fa86b2d655eb09ca255e48d6f66a7d37ddb37ae7549614466 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB454 | 16824 bytes |
font_01_sfnt_off0000de66.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE66 | 16792 bytes |
font_02_sfnt_off0000f67d.binb287dbf5f5bf18bcfe0082fe5b725158b26d9a2410571cad59c736b24114642d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF67D | 11008 bytes |
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