MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or are hosted on disposable domains, indicating a link farm designed to redirect users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://ketchas.ru/uplcv?utm_term=arabic+language+grammar+pdf PDF link annotation
- http://daydreamspin.com/userfiles/file/41796129952.pdfIn PDF document text
- https://washlounge.in/ckfinder/userfiles/files/wirazodikodimuwimowiwir.pdfIn PDF document text
- https://yarpaket.ru/userfiles/file/6359788786.pdfIn PDF document text
- http://stellar.ru/ckfinder/userfiles/files/17523302788.pdfIn PDF document text
- http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16150e0bd1b1f1---zotowemepixujigibarig.pdfIn PDF document text
- http://le383.com/uploads/files/gonokip.pdfIn PDF document text
- https://milorem-service.ru/userfiles/file/7720642475.pdfIn PDF document text
- http://balletpanov.com/uploads/files/rusafunorosodek.pdfIn PDF document text
- http://doubler-son-capital.com/photos/files/wojafifemetumitisezuwu.pdfIn PDF document text
- http://studioaba.net/userfiles/files/92560292361.pdfIn PDF document text
- https://anninhsieuthi.online/upload/files/wolodusemogutozop.pdfIn PDF document text
- http://hatowo.com/app/webroot/uploads/files/83950303680.pdfIn PDF document text
- http://doingthing.com/downloads/blog/geust/files/kafomuvidamoj.pdfIn PDF document text
- http://stonebreaker.at/xusovurevinu.pdfIn PDF document text
- http://aaaexpressac.com/userfiles/file/61708379458.pdfIn PDF document text
- http://fairbank-ia.org/admin/ckfinder/userfiles/files/4413860134.pdfIn PDF document text
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145be3f4bdda---32525298026.pdfIn PDF document text
- http://ijiantu.com/filespath/files/20210924145041.pdfIn PDF document text
- http://wsm.hk/images/uploadfiles/file/mogivibokoribazonugumoz.pdfIn PDF document text
- http://parbatsamajjapan.com/img/files/files/tisogabudebabagebabibokuf.pdfIn PDF document text
- https://icbacademy.com/upload/files/mumesimurarabitis.pdfIn PDF document text
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/cb89ead01d0ff889a323b25dc82f6a74/5731623175.pdfIn PDF document text
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/76d9cf8ec37cb68a80dbd481346fba2b/62322842689.pdfIn PDF document text
- http://pbhdom.eu/userfiles/file/44691879411.pdfIn PDF document text
- 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_off0000b23e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB23E | 16232 bytes |
SHA-256: aa629290c90ed7bd0d25f358435decc652c283f544b919b674fcd4ba8a010436 |
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font_01_sfnt_off0000dc23.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC23 | 10796 bytes |
SHA-256: f5e1fa426b814ab188a10e00365baa2bf20efe4c78642b7b2b4b984d072cab3f |
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font_02_sfnt_off0000f48a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF48A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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