MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF was flagged by ClamAV as a phishing trojan and ML classifier indicated high maliciousness. Heuristics indicate the PDF functions as a link farm, redirecting users to various external URLs, some hosted on compromised WordPress sites. The presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or credential harvesting attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://catamma.ru/uplcv?utm_term=i+get+up+in+spanish
- https://senfina.top/uploads/files/rosewadeko.pdf
- http://chamdure.com/DATA/files/25804458218.pdf
- http://vagtteam.dk/userfiles/Files/10724183051.pdf
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16136b3005d2da---lulatabupanuvativowosule.pdf
- http://aburobocon2019.mnb.mn/uploads/files/15036043595.pdf
- http://vietsaovang.com/uploads/userfiles/file/zofatidajejabelu.pdf
- https://stichtingech.org/ckfinder/userfiles/files/vidatezedotile.pdf
- http://immobilieninvestors.de/userfiles/file/mukiput.pdf
- https://beauty-full.ru/uploads/files/tatotusimeruviva.pdf
- http://stefanourso.com/public/userfiles/file/gomezuzapasawamawarikaked.pdf
- http://recviem.ru/img/upload/70558786971.pdf
- https://netiko.ge/img/Data/file/67355605715.pdf
- http://italianopizzeria-pg.com/uploads/files/69753682752.pdf
- http://www.andreapondika.cz/file/xiwove.pdf
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f15aeb568a---7322067805.pdf
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/161387d5079330---24404801888.pdf
- http://le383.com/uploads/files/66108600488.pdf
- https://majorsagilekvaros.hu/uploads/file/31358110563.pdf
- http://robbes.nl/media/files/62042935325.pdf
- http://munsusa.org/userfiles/file/20210905003012.pdf
- http://jjw-led.com/userfiles/file/meguzogiwirovumafil.pdf
- https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161493e74d21b6---nexopajuren.pdf
- https://intervalhousehamilton.org/ckfinder/userfiles/files/63333616357.pdf
- http://africalegal.nl/userfiles/file/rovotabumajoninazutege.pdf
- https://www.spitalmoldovanoua.ro/ckfinder/userfiles/files/59865752530.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b2b0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2B0 | 16792 bytes |
font_01_sfnt_off0000cac2.bin8601e3a9c2f7a0c2da3a092e9c85d4e7c2f4c5082fa7a49c4ec85f7eb2436c86 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAC2 | 15748 bytes |
font_02_sfnt_off0000f250.bin18f713f558ebd8d0d9ced33e318c7964d7c71f91914d31b57654da6dee3f08ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF250 | 10316 bytes |
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