MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URIs and the 'link farm' heuristics strongly suggest a phishing or malware distribution vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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://crewmak.ru/uplcv?utm_term=atomic+model+erwin+schrodinger PDF link annotation
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b76ee163a2---12721325379.pdfIn PDF document text
- https://kudamatsu.org/userfiles/file/puvaf.pdfIn PDF document text
- http://malopolskiszlakwinny.pl/upload/File/rasurosesojir.pdfIn PDF document text
- http://www.derbysignandgraphics.com/uploads/file/85974156377.pdfIn PDF document text
- https://driftwoodcc.com/userfiles/files/2780096562.pdfIn PDF document text
- http://vyveva.eu/UserFiles/File/26046968970.pdfIn PDF document text
- https://gujaratisamajparis.org/upload/files/wokurepizinofakofagalag.pdfIn PDF document text
- http://santehnika34.ru/images/file/xesilokogijasosemutet.pdfIn PDF document text
- http://grandviewgroupresort.com/upload/files/99771671145.pdfIn PDF document text
- https://kham.vn/userfiles/file/75396873522.pdfIn PDF document text
- http://ndt-ultratech.com/files/81542531602.pdfIn PDF document text
- http://tpdw.pl/userfiles/file/fowikurosanowotiguwa.pdfIn PDF document text
- https://vivaldiroberto.com/img/files/mediafiles/file/bebedaguvotupuka.pdfIn PDF document text
- https://mimpishio1bet.net/contents/files/bevinero.pdfIn PDF document text
- https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613892814b6a8---derusudazawirujejirugasa.pdfIn PDF document text
- http://df-2.de/images/daten/file/57716027274.pdfIn PDF document text
- https://fleschimmo.lu/userfiles/files/zepew.pdfIn PDF document text
- https://www.le-domaine-de-hauterive.fr/ckfinder/userfiles/files/42000189834.pdfIn PDF document text
- http://halongbaycruises.org/upload/files/vuzududa.pdfIn PDF document text
- https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/b935d15e41d4efb716b7df4209c7c44a/lafipovolobozetokeroriwoj.pdfIn PDF document text
- https://pacpartner.net/images_client/imagesfile/96543716027.pdfIn PDF document text
- http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141b5b233c7b---54358343980.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_off0000c692.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC692 | 17712 bytes |
SHA-256: 5c717d454388ef258932f5051fb1eacb8d36e6078497c116d1dd5788a887f9c4 |
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font_01_sfnt_off0000f434.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF434 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010c4b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C4B | 10720 bytes |
SHA-256: 5305513164dbf912f60c1408c2b68e4f38b32fd60c0422187909ba235906ae4c |
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