MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by a machine learning classifier and ClamAV. It functions as a link farm, containing numerous URLs that point to compromised WordPress upload storage and other disposable hosting. These links likely lead to phishing pages or further malware downloads, indicating a spearphishing attachment attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 6
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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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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://marlin-aquarium.ru/ckfinder/userfiles/files/98433722604.pdf In PDF document text
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/a3da90929e8fe1dab8b6c052c057a48e/43518961422.pdfIn PDF document text
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160cc9b083518b---46134906007.pdfIn PDF document text
- http://orthodoxvaidikasanghom.org/userfiles/file/zadebemewovidunib.pdfIn PDF document text
- http://onnetsolution.in/userfiles/file/40691092584.pdfIn PDF document text
- http://arkystudio.eu/userfiles/files/65596416138.pdfIn PDF document text
- http://enslev-anlaegsservice.dk/userfiles/file/25707183061.pdfIn PDF document text
- http://degrossier.nl/uploads/file/siwarusenitulogatowi.pdfIn PDF document text
- https://tapuionoticias.com/ckfinder/files/xenolutalejuniduzurefub.pdfIn PDF document text
- http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d4723767fbc---59954629859.pdfIn PDF document text
- http://4grd.com/cmsimages/file/59121873378.pdfIn PDF document text
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070824c6cefd---kewazaxodorages.pdfIn PDF document text
- http://work4shop.cz/userfiles/file/53044500964.pdfIn PDF document text
- http://veterinariacasettamattei.it/userfiles/files/vitowomagefufubofibik.pdfIn PDF document text
- http://azizolace.cz/images/file/sebugejasavomagak.pdfIn PDF document text
- http://chongros.com/userData/board/file/76663019257.pdfIn PDF document text
- http://gshosnab.ru/userfiles/file/mixipowubedowutimo.pdfIn PDF document text
- https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/028685eda2da7ff74acbd480c09c9001/gekotaduzodidapuje.pdfIn PDF document text
- https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/16121c8e023684---povotibizo.pdfIn PDF document text
- http://faurerom.com/userfiles/file/dugexagoxonavol.pdfIn PDF document text
- http://selfmadefilms.nl/userfiles/files/67078813851.pdfIn PDF document text
- http://zit-tech.com/userfiles/files/badakoru.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=descargar+himnario+suprema+alabanza+pdfPDF 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_off0000fc66.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC66 | 20612 bytes |
SHA-256: 96bd0844da598bd12ebadc0a600235a15fbe9502e4c5e6b4a5bbfa2bb503cae5 |
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font_01_sfnt_off0001313f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1313F | 11268 bytes |
SHA-256: 3efb95867abfee49f78a43889a3ee3212c2e0cba52dca6fbf3a1f8afe9965fba |
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font_02_sfnt_off00014b18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14B18 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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