MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs that form a link farm, with several pointing to compromised or disposable hosting. The primary purpose appears to be redirecting users through these links, likely to a phishing site or to download a secondary payload.
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://chcial.ru/uplcv?utm_term=best+pc+game+on+android PDF link annotation
- http://patanamachine.com/imgUpload/files/47208678506.pdfIn PDF document text
- http://tauben-buchmeier.de/kleinberliner-schuetzen/userfiles/files/goguruwinirenavorasekumi.pdfIn PDF document text
- http://szybkieprawko.pl/szybkieprawko.pl/user/admin/fck/file/jivasopotidesa.pdfIn PDF document text
- http://hanart21.com/files/userfiles/file/75913597570.pdfIn PDF document text
- http://xn--b1agaa2anfqdp.xn--p1ai/ckfinder/userfiles/files/7085011060.pdfIn PDF document text
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/c9395d00dd3d7e9c482f63677a8228a6/30118017699.pdfIn PDF document text
- http://dlshixiang.com.cn/ckfinder/userfiles/files/75415747418.pdfIn PDF document text
- https://artofsurfing.com/preview/ckfinder/userfiles/files/51077328640.pdfIn PDF document text
- http://hainescentreasia.com/images/file/83694197982.pdfIn PDF document text
- http://tbvshungviet.com/upload/files/wifune.pdfIn PDF document text
- http://azbuka-d.ru/ckfinder/userfiles/files/45129024655.pdfIn PDF document text
- https://simplehome.ro/ckfinder/userfiles/files/vebitejirikisuxojiwexaw.pdfIn PDF document text
- https://jmbarrenetxea.soinuenea.eus/files/galeria/files/jurexabetipefora.pdfIn PDF document text
- https://isagrinio.gr/userfiles/nefar.pdfIn PDF document text
- http://rialta.ie/userfiles/files/ralarijimojerawaputeribir.pdfIn PDF document text
- http://beiwendq.com/userfiles/file/51885364337.pdfIn PDF document text
- https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161305c9bafb3f---9530885575.pdfIn PDF document text
- http://megaprestige.ru/uploads/files/81993904843.pdfIn PDF document text
- http://stefanourso.com/public/userfiles/file/48214161565.pdfIn PDF document text
- https://marljivo.hr/UserFiles/files/44186285834.pdfIn PDF document text
- http://flairpens.ru/uploads/files/varakageba.pdfIn PDF document text
- https://derya.afmiletisimajansi.info/resimler/files/65192661566.pdfIn PDF document text
- https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613da9af59fa3---32784724511.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_off0000d99d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD99D | 10864 bytes |
SHA-256: c7cb20c2e994204ad3f546731c33b060b8e244c3f2e73634c085f4e4a993195e |
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font_01_sfnt_off0000f287.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF287 | 17684 bytes |
SHA-256: d23d488951538c904279041408e53e12d78bce23036163b8dd2da836eb379328 |
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font_02_sfnt_off00012012.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12012 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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