MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. Multiple heuristics indicate the PDF contains a link farm pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of an IP address literal in a URI further supports this malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 8
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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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/b409abc4531e0b03524301f60207d5e9/kopimigibutajop.pdf
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f09dcb6f25---nipem.pdf
- https://susta.vn/userfiles/file/salajifuxanitebo.pdf
- http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608108ae466ff---tabamixubugonetowini.pdf
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e883c32a81---roxaju.pdf
- http://ttccid.com/userfiles/files/95054584746.pdf
- http://alpha-cp.com/userfiles/file/jususawozezenenojigulen.pdf
- http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/0ee12baf2344bc5bff1390eee9d55a3b/20346865857.pdf
- http://alpha-cp.com/userfiles/file/6618986655.pdf
- http://www.mearesandassociatesllc.com/siteuploads/editorimg/file/rilonewi.pdf
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160773eb33318b---59713089380.pdf
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075bcfa10a2b---migoxipew.pdf
- https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608454bfbfcd9---66189718640.pdf
- http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1979c7406---xilakidojolinulifedan.pdf
- https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/0u7a0m1p6n1rnqhnkhu64ced14/bamowijimojubas.pdf
- http://toonesk.com/upload/tawopik.pdf
- http://canxetaidientu.com/images/file/buwevogubido.pdf
- http://chithanhplastics.com/uploads/userfiles/file/duxekutop.pdf
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/7a72fmicakq15guh90sbvohrlb/67002056796.pdf
- http://bukharaalpharetta.com/sites/default/files/file/67380368368.pdf
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160befe4c5ce3c---dunilikojotifol.pdf
- http://157.230.241.115/image/upload/File/5873828693.pdf
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16096ad921264f---nizovajosibi.pdf
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a677265cfca---sofoxonimotoz.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=biting+horse+fly
- 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_off0000f728.bin790ca31b7775ac4c59d065900ef9ef54db47e1f8c5536fd939be63e3a056c5d4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF728 | 10496 bytes |
font_01_sfnt_off00010f00.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F00 | 16792 bytes |
font_02_sfnt_off00012712.bine2ca643b49a25737cc7cad19468cfbd17e15094bb580a1d4e85591bf45083665 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12712 | 17348 bytes |
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