MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains, a common tactic for phishing or distributing further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically points to this behavior.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 5
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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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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=indeed+jobs+apk PDF link annotation
- https://www.zolmedis.lt/ckfinder/userfiles/files/65833353131.pdfIn PDF document text
- https://cicadit.ro/UserFiles/file/faginubo.pdfIn PDF document text
- http://gibisch.com/files/files/87729728645.pdfIn PDF document text
- https://simbotour.ro/ckfinder/userfiles/files/46681227418.pdfIn PDF document text
- https://vgi-vn.vn/app/webroot/img/files/vozudike.pdfIn PDF document text
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1613693f1735bc---pivudowonok.pdfIn PDF document text
- https://hophamthaibinh.com/upload/files/fijuketogixubetowakukem.pdfIn PDF document text
- http://www.springperfect.com/upload/finder/files/78598853526.pdfIn PDF document text
- https://icon-studios.com/userfiles/file/jajidi.pdfIn PDF document text
- http://topup-fight.com/ckfinder/userfiles/files/3605947689.pdfIn PDF document text
- https://postelezmasivu-zlin.cz/ckfinder/userfiles/files/10725542611.pdfIn PDF document text
- http://verzorgingsindex.nl/images/uploads/zedewesa.pdfIn PDF document text
- https://franchisebusinessadvisors.franchisebrokerwebsites.com/broker-site/files/files/16488042782.pdfIn PDF document text
- http://sotel-perm.ru/site/file/30201356224.pdfIn PDF document text
- http://hwayoung.kr/upfile/files/32539551806.pdfIn PDF document text
- http://mofrantech.com/userfiles/file/kovojex.pdfIn PDF document text
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133915ae18e6---gevinuvijivevuzowabet.pdfIn PDF document text
- http://sevenseahotel.com/uploads/images/files/26419761307.pdfIn PDF document text
- https://hargagila.com/uploads/image/files/vubagosa.pdfIn PDF document text
- http://haraj-alqunfudhah.com/userfiles/file/93250061560.pdfIn PDF document text
- http://innovad-ltd.com/userfiles/file/mufobebise.pdfIn PDF document text
- http://bjerkelunden.org/content/files/userfiles/file///79224320157.pdfIn PDF document text
- http://www.radeton-cz.vasestranky.cz/ckfinder/userfiles/files/watixevuguxajonedebiki.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_off0000b7d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB7D1 | 10360 bytes |
SHA-256: 30876f185e89861467c1f90efb38e0a7b413006e93fb4bf62dacd6b08f353961 |
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font_01_sfnt_off0000cf1a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF1A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e72c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE72C | 18008 bytes |
SHA-256: 77b11205363b6e73878351c91de0eb945e4ff2955293586fe2caada01a9abf57 |
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