MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating it is likely a phishing or trojan distribution attempt. The numerous embedded URLs point to a link farm hosted on compromised WordPress sites and disposable domains, designed to redirect users to malicious content. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports the conclusion that this document is part of a campaign to drive traffic to potentially harmful websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9979
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://chcial.ru/uplcv?utm_term=ncert+10th+class+maths+book+solutions+pdf PDF link annotation
- http://akcjonariusz.com/UserFiles/file/2430506975.pdfIn PDF document text
- https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a8f8c4f513---guroduzavemusanu.pdfIn PDF document text
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b70da821796---govopabileresefox.pdfIn PDF document text
- http://psmpetcare.com/clients/76030/File/mafulekuxaxavo.pdfIn PDF document text
- http://cuacuondaiphuc.com/upload/files/3239529830.pdfIn PDF document text
- http://ji-tien.com/userfiles/file/jaxixajomunutixu.pdfIn PDF document text
- https://thietbivesinhsonhoa.com/webroot/img/files/15736889299.pdfIn PDF document text
- http://aaaexpressheating.com/userfiles/file/86284430527.pdfIn PDF document text
- https://abugfreemind.com/userfiles/file/39455314526.pdfIn PDF document text
- http://zuestag.ch/userfiles/files/tufalu.pdfIn PDF document text
- http://akkoryazilim.com/userfiles/file/kabokoxufimokiwezad.pdfIn PDF document text
- https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a5780bee8---dugaxexogazepovijelofo.pdfIn PDF document text
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c085facc3f7---97047934024.pdfIn PDF document text
- http://technoculture.cz/admin/upload/file/7160974469.pdfIn PDF document text
- https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/0a4fd202cff5be19f5703b9f1975e5f2/51172575379.pdfIn PDF document text
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160ab322ed5da5---lemirixepipu.pdfIn PDF document text
- https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/zigekidopefitegopegowusi.pdfIn PDF document text
- http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1608750193e43b---lirudutoxizolodimumixupe.pdfIn PDF document text
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/1915406e8bd05d4ca9219356db339040/guzigez.pdfIn PDF document text
- http://hykylalumni.org/userfiles/55518302229.pdfIn PDF document text
- https://picinterior.com/ckfinder/userfiles/files/45227185695.pdfIn PDF document text
- http://szymonadamczyk.pl/uploads/fck/file/kexaremigodudamexutenalo.pdfIn PDF document text
- http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/c63ef97e6aa89ff0d712391db3c40f43/napakiti.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_off0000f956.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF956 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00011168.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11168 | 19572 bytes |
SHA-256: 9c87b45eefa78c3252d2acf2cb2f5187abf53022818754882654c61cfd2279bb |
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font_02_sfnt_off00014632.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14632 | 11368 bytes |
SHA-256: 6a2f69a9f57e4a3787f358faf724db48c7b8c29ee87aca2e85d0a03eece4cf62 |
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