MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external links, with a high-severity heuristic indicating it's a link farm on disposable hosting. One link points to a suspicious domain, and ClamAV detected it as a phishing trojan. The document body is heavily obfuscated, but the presence of external links and the heuristic firings strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://krisoc.ru/uplcv?utm_term=the+invisible+man+2020+yify PDF link annotation
- http://hongdacable.com/d/files/16477696072.pdfIn PDF document text
- http://tydafa.com/dafa/uploadfiles/20210905185556.pdfIn PDF document text
- http://ourpreferred.com/userfiles/files/57938797252.pdfIn PDF document text
- https://egyiksem.hu/uploads/file/kopovofifujagivutip.pdfIn PDF document text
- http://huh.hu/UserFiles/File/88148656212.pdfIn PDF document text
- http://istihdamhaberleri.com/upload/ckfinder/files/gurijurejajo.pdfIn PDF document text
- http://afro-safari.com/upload/files/narowenatemafi.pdfIn PDF document text
- https://jagamimpi.info/contents/files/31660275369.pdfIn PDF document text
- http://uzks.hr/upload/datoteke/1617874414.pdfIn PDF document text
- http://nattuvaartha.com/assets/ckfinder/core/connector/php/uploads/files/nuduvivanizadozixade.pdfIn PDF document text
- https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/medagevediwuzo.pdfIn PDF document text
- http://digivideos.net/ckfinder/userfiles/files/xikigenuxemurupodazama.pdfIn PDF document text
- http://linkingpeople.info/userfiles/file/251402488.pdfIn PDF document text
- https://mjrspot.com/fckimages/file/98522295308.pdfIn PDF document text
- http://yourtruck.be/upload/ckeditor/file/bonekadolimevaganiw.pdfIn PDF document text
- https://valkexclusief.reviewz.eu/app/webroot/files/userfiles/files/33323814323.pdfIn PDF document text
- http://euro520.net/userfiles/file/16308676961372905890.pdfIn PDF document text
- http://leaguengn.com/userfiles/file///53956104913.pdfIn PDF document text
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c6bc6349f4---76783992579.pdfIn PDF document text
- http://ibb-online.ru/f/file/neravuneresuzujujunas.pdfIn PDF document text
- https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/73011abbba663b70df5ecc51a370829f/torolegepuripi.pdfIn PDF document text
- http://synphabase.ch/upload/file/74672358984.pdfIn PDF document text
- https://kirbas.com/img/uploaded/file/mezatetu.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_off0000c1d8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1D8 | 19516 bytes |
SHA-256: 9d3d8f5afbabb9f2745eef4b0554d576b67a2c9e6937e7967fb7b7feda4c5fcc |
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font_01_sfnt_off0000f585.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF585 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010d9c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D9C | 10684 bytes |
SHA-256: 51f41a9d108b4b6980c4b7a67a1e6661005eea4a7f7c2dca80d28662d284785c |
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