MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to compromised WordPress upload storage and disposable hosting sites. The presence of numerous external URIs suggests an attempt to redirect users to phishing or malware-hosting pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://pistant.ru/uplcv?utm_term=meaning+of+asymptote+in+math PDF link annotation
- https://altonika.pro/files/fck/file/vobuwenagisanoletalowijad.pdfIn PDF document text
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/161410b71231ae---21218899709.pdfIn PDF document text
- http://jia-longsofa.com/uploadpic/jialong151126/files/202109122233369936.pdfIn PDF document text
- http://anquocrealty.com/uploads/image/files/59709239950.pdfIn PDF document text
- https://alkirbilaw.com/userfiles/files/53449421488.pdfIn PDF document text
- http://kusistoconstruction.com/userfiles/file/13733861469.pdfIn PDF document text
- http://poliambulatorioargentina.eu/userfiles/files/likabasoz.pdfIn PDF document text
- http://submission.jpvm.kr/pds/userfiles/files/tuzanafaverinebiz.pdfIn PDF document text
- https://psystat.net/candyticket/uploads/page_images/files/23449606195.pdfIn PDF document text
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614615dca0b69---sawizibanan.pdfIn PDF document text
- https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/16158c28c78c9b---76379759605.pdfIn PDF document text
- http://pasaru.com/upload/files/6217802707.pdfIn PDF document text
- http://rayocazar.com/images/elfinder-1.1/files/file/97864925065.pdfIn PDF document text
- https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d1315ec201---10337202422.pdfIn PDF document text
- http://decentlogistics.pk/survey/userfiles/files/70605273030.pdfIn PDF document text
- http://rfinshaat.az/userfiles/file/wufomebali.pdfIn PDF document text
- http://kammatrans.com/userfiles/files/gixifobezidokavijed.pdfIn PDF document text
- https://brakos.it/file/15915238122.pdfIn PDF document text
- http://faw-asia.com/image/upload/files/17321823351.pdfIn PDF document text
- http://srub-servis.ru/userfiles/file/615369015.pdfIn PDF document text
- http://www.agenbenangbandung.net/file/bujorokorajamum.pdfIn PDF document text
- https://www.hkha.com.hk/ckfinder/userfiles/files/4316552681.pdfIn PDF document text
- http://sro52.ru/uploads/files/85811276263.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_off00010e00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E00 | 10768 bytes |
SHA-256: f886b79cc6cf00183ec5bcee413081f372d1cfb31c02ad0e10a1faf9c17464cb |
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font_01_sfnt_off000126a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126A4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013eb6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13EB6 | 22720 bytes |
SHA-256: 84c44345c0b939c173d7142c4c91caa27c5ab81c69f3be2896f342e60ce28f3c |
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