MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The file contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a phishing or link-farming campaign. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://crysiq.ru/uplcv?utm_term=statistical+techniques+for+data+analysis+pdf PDF link annotation
- https://immo-cjeanpaul.lu/userfiles/files/75484172725.pdfIn PDF document text
- http://nwatchonline.net/userfiles/file/82172751625.pdfIn PDF document text
- https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/d17f7e923be431f4f84c649687d8494b/dirarasada.pdfIn PDF document text
- https://defrokatilai.lt/images/files/fedobotodofe.pdfIn PDF document text
- http://angel-conference.org/upload_fck/file/2021-8-11/20210811175325123397.pdfIn PDF document text
- http://fsgzb.com/upfolder/e/files/20210814230246.pdfIn PDF document text
- https://rux-thai.com/ckfinder/userfiles/files/jokogigiwobolos.pdfIn PDF document text
- http://fotostudiovaccari.it/userfiles/files/85683042544.pdfIn PDF document text
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091241b64a80---63042635573.pdfIn PDF document text
- https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/vmr7s7dp3c0ko9s4l1hpv81384/xunasuzuvipisawanipo.pdfIn PDF document text
- http://qytbearing.com/upfile/file/pewizogifaruzokavujibo.pdfIn PDF document text
- https://autoradiator.mn/uploads/ckfinder/files/befafuxa.pdfIn PDF document text
- http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e23ba33eb---devunuwejebunivibovek.pdfIn PDF document text
- http://ofitecnic.es/files.ofitecnic/fck_up/file/47591002087.pdfIn PDF document text
- https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcd717802a9---37074591623.pdfIn PDF document text
- http://www.medicellbank.com/userfiles/files/78011041669.pdfIn PDF document text
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/ad3d43ac3c727b831a8f8898cb5812f4/nabadal.pdfIn PDF document text
- http://ildungrice.com/fileupload/fckeditor/file/wutufegepojefaf.pdfIn PDF document text
- http://gangwonbnb.com/FileData/ckfinder/files/20210601_7D4863407FD83E2B.pdfIn PDF document text
- http://playbabydoll.com/userfiles/file/29352636603.pdfIn PDF document text
- http://rc-modeller.se/images/file///53880876175.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_off0000d38a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD38A | 18232 bytes |
SHA-256: 18bdbd5478377384b5e21cc5ea50a1dcedb338302eb8a7c8344358492d068465 |
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font_01_sfnt_off0001023f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1023F | 11152 bytes |
SHA-256: 5cee7e4a4de2492436cec9b4f64a9cc9c71aae287bb59835f6c429001c9636f5 |
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font_02_sfnt_off00011c06.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C06 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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