MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The embedded URLs and the nature of the heuristics strongly indicate a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://www.bramfordgc.co.uk/ckfinder/userfiles/files/nekapigew.pdf In PDF document text
- http://szerecsen.hu/editor_up/sufig.pdfIn PDF document text
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613c7f47823c4---29766131032.pdfIn PDF document text
- http://vom-ragnaroek.de/uploads/file/bopokitigibesene.pdfIn PDF document text
- http://testsitehq.com/ckeditor-ckfinder-integration/uploads/files/kezokotigofimuw.pdfIn PDF document text
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/59b2fe03c201deefbb2363b0f9e2e62b/26829763788.pdfIn PDF document text
- https://wsbe17hongkong.hk/_bin/ckfinder/userfiles/files/powolumaliwugutixit.pdfIn PDF document text
- http://canshu.dlzj.net/upload/files/20210914093004400794.pdfIn PDF document text
- http://simsvizag.com/contentimages/file/dipuvujanodadagagopidodov.pdfIn PDF document text
- https://adoz.cz/ckfinder/userfiles/files/mokevejiwezin.pdfIn PDF document text
- http://asbazainville.org/userfiles/file/2449521687.pdfIn PDF document text
- http://wingmanplanningdemo.com/userfiles/files/kowexironemozemabajod.pdfIn PDF document text
- http://darslaska.org/ckfinder/userfiles/files/21016976809.pdfIn PDF document text
- https://hiroyoung.com/data/files/sijegipezejonojoribo.pdfIn PDF document text
- http://evevoyance.fr/adh/.-/file/bugoxifexiguda.pdfIn PDF document text
- http://studiopassarotti.it/userfiles/files/80421639571.pdfIn PDF document text
- http://ei-windykacja.pl/upload/file/61480924930.pdfIn PDF document text
- https://vgi-vn.vn/app/webroot/img/files/mudonelegopisikub.pdfIn PDF document text
- https://iagclaims.endataclaims.com/ModCoreFilesUploaded/file/wuxagapunixorixowu.pdfIn PDF document text
- https://efficimm.fr/userfiles/files/soraxod.pdfIn PDF document text
- http://brickform.cz/obrazky/files/5196761101.pdfIn PDF document text
- http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/161354e647f332---fonazitubirabetazesox.pdfIn PDF document text
- https://qeyeoptical.com/ckeditor/ckfinder/userfiles/files/14126550040.pdfIn PDF document text
- https://nwdglobal.com/ckfinder/userfiles/files/16480828505.pdfIn PDF document text
- https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/1018c3dd20057d6041b789356c32a45b/zusonevit.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=the+nanny+live+streamPDF link annotation
- 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_off0000e22c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE22C | 17476 bytes |
SHA-256: 0d292158a8ddd13f3f555c0816ff1322a553538d4b4cf84f6007947ad220e2cf |
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font_01_sfnt_off00010f96.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F96 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000127ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127AD | 10396 bytes |
SHA-256: 50c71987c24613d4cd70f268e91ab6b4cbf1b8b58da81d77196a5818ea15f66a |
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