MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. It contains numerous external links, many pointing to disposable hosting, suggesting a link farm or phishing lure. The presence of embedded URLs and the PDF_RANDOM_URL_LINK heuristic indicate an attempt to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
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 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://irlanc.ru/uplcv?utm_term=letter+of+recommendation+for+phd+candidate PDF link annotation
- http://katachizu.com/img/news/files/disoverekelavinu.pdfIn PDF document text
- http://0048.pl/48files/file/zalaloguk.pdfIn PDF document text
- https://www.sophrologue-nimes.fr/upload/news/files/menanurinilifizi.pdfIn PDF document text
- http://portaldo.eu/contenuti/upload/file/xilutajupawijaki.pdfIn PDF document text
- http://facilitymanagementassociates.com/survey/userfiles/files/8458329715.pdfIn PDF document text
- http://ijiantu.com/filespath/files/20211013055514.pdfIn PDF document text
- https://taybaite.com/userfiles/file/96825828384.pdfIn PDF document text
- http://acm-medicali.it/userfiles/files/xuvomoxomoxegixaxakaraxiw.pdfIn PDF document text
- http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/16165e3bb1dd84---dudedesatasefil.pdfIn PDF document text
- http://galeriejacqueselbaz.com/userfiles/file/84302837919.pdfIn PDF document text
- http://ambulatorioveterinariobubiniregini.eu/userfiles/files/18229599192.pdfIn PDF document text
- http://strelnicebudejovice.cz/userfiles/file/72057439756.pdfIn PDF document text
- https://highlander-inn.com/assets/userfiles/files/jadebiwazojipituzafuk.pdfIn PDF document text
- http://kondicionery-fryazino.ru/upload_picture/file/tisulakulusanewididas.pdfIn PDF document text
- http://4226080.kad.tw/kads/ckfinder/userfiles/files/jenukelilugedexu.pdfIn PDF document text
- https://anitacalderon.com/ckfinder/userfiles/files/92809609268.pdfIn PDF document text
- http://aromacosmetics.bg/assets/userfiles/file/66004655029.pdfIn PDF document text
- https://educationindiajournal.org/ckfinder/userfiles/files/mifojasefita.pdfIn PDF document text
- http://viviapalermo.com/userfiles/files/sejaxuma.pdfIn PDF document text
- http://yilip.net/userData/board/file/meluxuxilelatomimafed.pdfIn PDF document text
- http://liweisteel.co.th/ckfinder/userfiles/files/dazokolesinazonigorot.pdfIn PDF document text
- http://marsalanoleggio.it/userfiles/files/20883010718.pdfIn PDF document text
- https://dodatnagarancija.com/userfiles/file/91116693331.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_off0000d2f5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD2F5 | 17096 bytes |
SHA-256: 5e495ebc67a9f6c9613203e6a0a6d72755cc476be168901319a996e12bace67b |
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font_01_sfnt_off0000fde7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDE7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000115fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x115FE | 10628 bytes |
SHA-256: 3def70b9dcfde3e8b0509711cc10b91d79620d2c1df9f4bab24da8bd88915958 |
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