MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of numerous external URIs, including a link farm on disposable hosting, suggests a phishing or malware distribution attempt. The heuristic 'SE_DOWNLOAD_BUTTON' further supports a lure-based attack pattern. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to trick users into downloading further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=free+product+key+com+windows+8.1 PDF link annotation
- https://alarouba.com/ckfinder/userfiles/files/99020036597.pdfIn PDF document text
- http://citysoupsbellevue.com/uploads/files/rasipepamigokusoxevorakik.pdfIn PDF document text
- https://excellencetogether.com/img/files/file/pexefibax.pdfIn PDF document text
- http://studioagronomoserragiotto.eu/userfiles/files/gijokawus.pdfIn PDF document text
- http://thewhitmerlawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lokenafakakegodetozul.pdfIn PDF document text
- https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/6e9113e30494d1c01a6de675cf8eb1ee/vivexulinidebetojavazi.pdfIn PDF document text
- http://bocghebinhduong.com/media/ftp/file/55612555518.pdfIn PDF document text
- https://samngaimarble.com/html_upload/file/54492942649.pdfIn PDF document text
- http://nova-auto.com/upload/36135298854.pdfIn PDF document text
- https://loctra.net/userfiles/file/dadinijojine.pdfIn PDF document text
- https://jamurgoreng.net/contents/files/nilozuseno.pdfIn PDF document text
- http://usa-ex.com/images/blog/file/21802392747.pdfIn PDF document text
- http://www.celso.org/download/39346356291.pdfIn PDF document text
- http://heatexchangersolution.com/upload_fck/file/2021-9-15/20210915215810421020.pdfIn PDF document text
- http://ffarchitettura.it/userfiles/files/37042867953.pdfIn PDF document text
- http://baugeraeteverleih.de/benutzerdateien/37847161081.pdfIn PDF document text
- http://www.39koratmachinery.com/file_upload/files/88654590739.pdfIn PDF document text
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/161337f6fdd9dc---46621075812.pdfIn PDF document text
- http://electronicaindex.nl/images/uploads/fufuwasoxagoruwudi.pdfIn PDF document text
- https://amt-alarmy.pl/userfiles/file/bonavipapetuz.pdfIn PDF document text
- http://rayocazar.com/images/elfinder-1.1/files/file/kokufelukagepiwakamovobat.pdfIn PDF document text
- http://1544-7419.net/upload/fckeditor/file/77943330375.pdfIn PDF document text
- https://residenciasanamaro.es/userfiles/files/nusororakuwevula.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_off0000d87c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD87C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f08e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF08E | 17220 bytes |
SHA-256: f3b9d39d93a48d6a9191e707841fc38e51198b8feeb59e57407ab048bdbc9406 |
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font_02_sfnt_off00011d3b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D3B | 11160 bytes |
SHA-256: c5ce3c5e292d7ef1aefbfecb5782f640aa6af015a8868252d18ae05dc3b9b1f6 |
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