MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting it functions as a link farm for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and link farm nature strongly indicate a malicious intent to redirect users to harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9940
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://krisoc.ru/uplcv?utm_term=sodium+peroxide+ionic+or+covalent PDF link annotation
- http://rotarybrescello.it/userfiles/files/24789915901.pdfIn PDF document text
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606c741ed7cd3---46426552987.pdfIn PDF document text
- https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160fdc7d1a2989---dowusixugowikoliwepogubux.pdfIn PDF document text
- https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/a91786206df0c14ea27e27f609525703/34710681083.pdfIn PDF document text
- http://santeh.md/img/files/notujovikebutigel.pdfIn PDF document text
- http://sola-brothers.com/userfiles/file/guwizaz.pdfIn PDF document text
- http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099c2839c430---12487551586.pdfIn PDF document text
- http://bunny888.com/ckfinder/userfiles/files/pifatub.pdfIn PDF document text
- http://istvietnam.com/rich_editor/file/6800826717.pdfIn PDF document text
- https://bursakaynak.com/userfiles/file/wopadalazewozufujub.pdfIn PDF document text
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/3273666f11a63160e9df5b629b0039ff/zuwob.pdfIn PDF document text
- http://nt-module.ru/ckfinder/userfiles/files/50256823173.pdfIn PDF document text
- http://campfirewtx.org/userfiles/file/65537662747.pdfIn PDF document text
- http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a8cb8c2aa32---gaxededi.pdfIn PDF document text
- https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/5senqkq7umviddjvpsqh4mq5m5/97753706229.pdfIn PDF document text
- https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/c42a7ecdb191e37106ce64bb8ca8dfd3/metugufi.pdfIn PDF document text
- https://mobilityservices.it/file/widovavowotopenimuwopojot.pdfIn PDF document text
- https://vanvoorst.info/uploaded/file/lovew.pdfIn PDF document text
- http://myblindz.com/fck_user_files/file/3315392715.pdfIn PDF document text
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160afd533bbfbd---64329835397.pdfIn PDF document text
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e42336c3c---76717744115.pdfIn PDF document text
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8c6f447e6---30433877216.pdfIn PDF document text
- http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160ac1ec086baf---4715332124.pdfIn PDF document text
- https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/9876cc16a1a0d286446f235065cb2bed/83821444927.pdfIn PDF document text
- http://labonscafe.com/userfiles/53237289286.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_off0000cb99.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB99 | 17076 bytes |
SHA-256: 1b2997ff0ebfb4e0c17ae7547de516f34130772f0cad4ee158c0f6666d2b3338 |
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font_01_sfnt_off0000f7d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7D9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010ff0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FF0 | 10852 bytes |
SHA-256: b5a8419b4c9dfa45d3532f809697afaf22d40fd31cccfd53d803a16e9202d323 |
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