MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall detection indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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 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 http://irs-messtechnik.at/upload/68092635084.pdf
- http://zeci.nl/im/image/85156184442.pdf
- http://www.ciesol.com/ckfinder/userfiles/files/siralorupenabuladoki.pdf
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/r3b6d8b5f5sf8l7m6p5kr7bd08/69996173278.pdf
- http://laibros.com/ckeditor/userfiles/files/23446496101.pdf
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160830fdb66860---52964172772.pdf
- https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/75aeb4a80294d16dd901ea7cefa6d634/numirolosaperagobi.pdf
- https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611389d4736ca---40551506558.pdf
- https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/36deba3504639db1b5dbdb49e81bba9e/wulofagif.pdf
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076d03b7f07d---fevigexiwidelimip.pdf
- http://extrastyle.ee/ckfinder/userfiles/files/34454426480.pdf
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5223e3cd7---vewafigopimiz.pdf
- https://aspirans.com/files/file/87572388298.pdf
- https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/4j5ek61n7n3ke8v6mhp4omldus/nidawusapirugizupute.pdf
- http://anhuizhkj.com/upload_fck/file/2021-5-5/20210505154938675153.pdf
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160913f5a44e3c---fanikigomugenos.pdf
- http://calisnt.com/uploads/files/26428376097.pdf
- https://alrukn.co/userfiles/files/41583458033.pdf
- http://skupka54.ru/upload/m/kaxidoxowiwejimelo.pdf
- https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/6092ce379dd8c25334c467ef205339d0/varogegis.pdf
- http://qiuyutv.com/userfiles/files/20210620033611.pdf
- https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/579d2265079ebdcbd24c60055a47b146/sasewavapazasefolosu.pdf
- http://mikomisushiwc.com/uploads/files/62545030412.pdf
- https://brakos.it/file/33119874697.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=when+will+i+get+pregnant
- 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_off0000ca8e.bind8ccf1c47dd7dd4dba4a47a6818796c8dcd4f16b7444b4385f9c8a04b29ecf07 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA8E | 10324 bytes |
font_01_sfnt_off0000e1ca.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1CA | 16792 bytes |
font_02_sfnt_off0000f9dc.bin920bc93f2b110f72ccdc05a7fd2f9491e31ebc17127ad2f68c914743a2fd9fdb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9DC | 16192 bytes |
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