MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document functions as a link farm, containing numerous URLs that point to other PDF files hosted on various domains, some of which appear to be compromised CMS uploads. This suggests a multi-stage attack where the initial PDF serves to redirect users to potentially malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://garglob.ru/uplcv?utm_term=best+happy+birthday+gif+funny PDF link annotation
- http://lineshare.net/upload/files/20210920214857.pdfIn PDF document text
- https://pasarangroup1.com/contents/files/45670780301.pdfIn PDF document text
- http://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/50876246750.pdfIn PDF document text
- https://yantrasearch.com/ckfinder/userfiles/files/5921235105.pdfIn PDF document text
- http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/161369a6e95773---80830740309.pdfIn PDF document text
- https://vadihosting.com/calisma2/files/uploads/18159300095.pdfIn PDF document text
- http://pibar.tw/uploads/files/202109122247476094.pdfIn PDF document text
- https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/e612e2eadd287ed77f504783d9f8b417/67545316105.pdfIn PDF document text
- http://mynotary.ca/sites/all/sites/mynotary.ca/files/59359147250.pdfIn PDF document text
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613726904adbc---72838538960.pdfIn PDF document text
- https://mumegram.com/userfiles/file/zevebipabidineguzalasel.pdfIn PDF document text
- http://newshop.jp/archive/file/xoremivep.pdfIn PDF document text
- https://dpengineers.info/admin/userfiles/file/21835016088.pdfIn PDF document text
- http://ke-sen.com/userfiles/file/1631912793.pdfIn PDF document text
- https://bimstudioinc.com/media/files/45113759943.pdfIn PDF document text
- https://giritrademark.com/content_files/files/xelemenijesezumabamogo.pdfIn PDF document text
- http://dyglas.com/userData/board/file/xokelakigotirufosamakineg.pdfIn PDF document text
- http://www.ecrivains-consult.fr/easyonline/ckfinder/userfiles/files/kavumu.pdfIn PDF document text
- http://akicgiyim.com/userfiles/file/59509340815.pdfIn PDF document text
- http://ateliergermain.club/sites/default/files/file/sawefupexogiwimeduk.pdfIn PDF document text
- http://www.rpv-drachten.nl/files/file/36038532876.pdfIn PDF document text
- http://union.travel/ckfinder/userfiles/files/vazapavurilabezelij.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_off0000b2c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2C1 | 11020 bytes |
SHA-256: af316716dc84678956cc358cd492bb3d84049c4795a4b723b70b591f79f9d060 |
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font_01_sfnt_off0000cbf4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBF4 | 18268 bytes |
SHA-256: 2c6b9588c9475784be1bfb88b674dc32312f64b340a8c1f5f4b13053679e37d8 |
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font_02_sfnt_off0000f9b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9B6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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