MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics as malicious, including a high-severity alert for a random URL link and a critical ClamAV detection. The ML classifier also assigned a high probability of maliciousness. The presence of numerous external URIs and link farm characteristics suggests an attempt to redirect the user to malicious content, likely for phishing or to download a second-stage payload. The PDF structure and embedded links indicate it's designed to exploit vulnerabilities or trick users into downloading further malware.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://hopadive.cz/ckfinder/userfiles/files/60699174173.pdf In PDF document text
- http://quincy.pl/ckfinder/userfiles/files/52293402187.pdfIn PDF document text
- http://mcutech.net/upload/2021/09/file/16313719891031708919.pdfIn PDF document text
- http://pro-roubenky.cz/UserFiles/File/7234672787.pdfIn PDF document text
- https://calson.garment-pro.com/ckfinder/userfiles/files/jofonabonazarotinununis.pdfIn PDF document text
- http://www.integra-cr.cz/administrace/ckfinder/userfiles/files/86111222058.pdfIn PDF document text
- https://ms01bet.com/contents/files/neridufapo.pdfIn PDF document text
- https://excellencetogether.com/img/files/file/82295945877.pdfIn PDF document text
- http://jumpstart.mobi/ckfinder/userfiles/files/lixazad.pdfIn PDF document text
- http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/22408082227.pdfIn PDF document text
- http://ilink.pl/userfiles/file/judedagonarawebuw.pdfIn PDF document text
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c65c98eb11---36403540522.pdfIn PDF document text
- https://vnjhanoi.com/upload/files/73643894023.pdfIn PDF document text
- http://tt-ural.su/admin/ckfinder/userfiles/files/10838206706.pdfIn PDF document text
- https://pakistanchristiancongress.org/userfiles/file/29707747476.pdfIn PDF document text
- https://nstoplana.rs/ckfinder/userfiles/files/63551491155.pdfIn PDF document text
- https://ximatinhdongnai.com/app/webroot/files/images/pages/files/bakobosagekuravabitu.pdfIn PDF document text
- http://teusz.pl/UserFiles/file/roxupikita.pdfIn PDF document text
- http://leprofit.ee/cmsfile/contentfiles/72566400627.pdfIn PDF document text
- https://discovercefalu.com/_data/images/file/86369906164.pdfIn PDF document text
- https://www.karelo.com/uploads/File/45945571660.pdfIn PDF document text
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16140bd9bf23fb---48338273182.pdfIn PDF document text
- http://china-miyaco.com/img/file/20219331057.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=voyages+in+world+history+3rd+edition+pdf+freePDF 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_off0000d84e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD84E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f065.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF065 | 11120 bytes |
SHA-256: b8e1033c8412bad9f5f891cd8b3acd0d4872a3d084c1eb6dd511fdd62455a9ec |
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font_02_sfnt_off00010a30.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A30 | 18308 bytes |
SHA-256: a1e00024d1fd0e9a67867ff74215935702a56c596afa8df8cf3e19a7f929e72b |
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