MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to numerous compromised WordPress sites, each hosting another PDF. This suggests a tactic to inflate search engine rankings or distribute malicious payloads through a chain of redirects. The ML classifier strongly indicated maliciousness, and the PDF structure with multiple external links supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9937
Heuristics 5
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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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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://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/de88fbdadb90d6c48bd4ab3be627cd18/fapukivebexiniridobiwib.pdf In PDF document text
- http://baschin-heizung.com/meineBilderAlbertGrundschule/file/volebalixanugapa.pdfIn PDF document text
- http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16070c09bf309a---webawas.pdfIn PDF document text
- https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/897602071e4b9dca9a3b2a0c3554b3f7/dipuvapo.pdfIn PDF document text
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b99e321a824---nolotazabakonotifixume.pdfIn PDF document text
- https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/6oq5l8a4mmo5pg3q7qbb5k2pn9/zefavox.pdfIn PDF document text
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/58df0a6c2e796deb72d835901332cfc4/53083263099.pdfIn PDF document text
- http://copingconversations.com/userfiles/file/tabazudo.pdfIn PDF document text
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/682bff420cca3ddbeb0ac2a667bd5241/9507393151.pdfIn PDF document text
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097195f30a48---fozawatu.pdfIn PDF document text
- http://marinda.ru/pics/images/file/belivosilamaxot.pdfIn PDF document text
- http://martonelektro.hu/files/file/fidugos.pdfIn PDF document text
- http://weforyou.it/userfiles/files/86752519900.pdfIn PDF document text
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/fe6b63db5956a9a04b7cb09d9242b118/nuvinesososujajosa.pdfIn PDF document text
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e4f0c9c702a---94466941871.pdfIn PDF document text
- https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b2fc33b28ec---63126951123.pdfIn PDF document text
- https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/702eca25383fe2ebcebc16dc07ab7127/97047698553.pdfIn PDF document text
- https://bdblue.com/ckfinder/userfiles/files/renorux.pdfIn PDF document text
- https://pablohernandes.com/wp-content/plugins/super-forms/uploads/php/files/1ab687ee43ae060f498dac30cda5ea06/41787396464.pdfIn PDF document text
- https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/ed028a98958e1f584a138d5c1218d1c7/gunivutufabamotajidirut.pdfIn PDF document text
- https://unique.global/wp-content/plugins/super-forms/uploads/php/files/ea731856153588d6d4863d5168f37ca9/vatoxujezomasewewisijeno.pdfIn PDF document text
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607dcc241cb1b---14435018360.pdfIn PDF document text
- http://hkt-optics.com/hkt/images/userfiles/file/jepilele.pdfIn PDF document text
- http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/vct5tt93hih9bcukoq57a18qo6/33866945926.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=linear+feet+to+square+yardsPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00014608.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14608 | 10620 bytes |
SHA-256: b0c538f76c4f894ad7e65acc3f8fb61c5937496283a9266536fa1c41dd7cf913 |
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font_01_sfnt_off00015e47.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15E47 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00017659.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17659 | 17172 bytes |
SHA-256: be1b48daf831e3243ad18679b8bde123f225c3cee01ff6288afc38cae1c5e40c |
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