MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to `infrive.ru`. The heuristic `PDF_SEO_DISPOSABLE_LINK_FARM` indicates the PDF is designed as a link farm on disposable hosting, further supporting a phishing or malware distribution intent. No scripts were extracted from this sample, but the presence of numerous external links suggests an attempt to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9837
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://infrive.ru/uplcv?utm_term=the+amplitude+of+the+graphs+of+the+sine+and+cosine+functions+is PDF link annotation
- http://imobilestore.de/userfiles/file/29761735732.pdfIn PDF document text
- http://xn--4k0b43gkwo4gn.com/upload/editor/file/sowumekonanebumud.pdfIn PDF document text
- https://aljuboori.com/userfiles/files/60760595226.pdfIn PDF document text
- https://shreenathtechnologies.com/userfiles/file/62147770331.pdfIn PDF document text
- http://akicgiyim.com/userfiles/file/75164437173.pdfIn PDF document text
- https://brazilairporttransfers.com/ckfinder/userfiles/files/zozis.pdfIn PDF document text
- https://perfecthospital.org/FCKeditor/file/32889279961.pdfIn PDF document text
- http://grasslandtj.com/upload/files/83425081288.pdfIn PDF document text
- http://lamgi.pl/ckfinder/userfiles/files/31699824433.pdfIn PDF document text
- http://df-2.de/images/daten/file/1494826142.pdfIn PDF document text
- http://swotaweb.com/img/upload/file/banif.pdfIn PDF document text
- http://chiangmaicharmingtravel.com/ckfinder/userfiles/files/wofubumabamojufigu.pdfIn PDF document text
- http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613d48c1778fd---gipix.pdfIn PDF document text
- https://creteservices.com/FCKeditor/userimages/file/72455003849.pdfIn PDF document text
- https://www.moxiclear.com.au/application/third_party/ckfinder/userfiles/files/92865016861.pdfIn PDF document text
- https://zapcdn.space/web/img/podborky/files/48312562777.pdfIn PDF document text
- http://dpsszczytno.pl/photo/file/vowojirubonolalaxujudipir.pdfIn PDF document text
- http://cartopack.com/Images/file/22101172246.pdfIn PDF document text
- http://www.mustwalge.ee/data/content/files/84342197583.pdfIn PDF document text
- http://eqletstalk.com/uploads/files/202109080024381789.pdfIn PDF document text
- https://fizjolech.pl/userfiles/file/28014480718.pdfIn PDF document text
- https://aczv.fr/userfiles/file/66725452842.pdfIn PDF document text
- https://bomnuocebara.com/quangbasanpham/app/webroot/upload/image/files/34502404564.pdfIn PDF document text
- https://lrsinc.co/userfiles/file/kevejubavimixivinatu.pdfIn PDF document text
- https://kme.pl/global/app/webroot/uploads/file/16307804374796.pdfIn PDF document text
- http://amandatravel.com/userfiles/file/17256834316.pdfIn PDF document text
- https://degardo.hollandpazsit.hu/ckfinder/userfiles/files/80545446694.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_off0000b30a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB30A | 11132 bytes |
SHA-256: 45e381898c8a8c07f45507f05af89a73766477c372b919d4b1a4f75091ef6826 |
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font_01_sfnt_off0000cc96.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC96 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e4a8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4A8 | 15076 bytes |
SHA-256: 2cc95c087b082ede0c44a88994deb200a23194d2902314c465cf460aa8adbaa6 |
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