MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The PDF contains embedded JavaScript and a large number of external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a likely phishing or redirection scheme. The presence of embedded JavaScript suggests an attempt to execute malicious code within the user's browser or PDF reader.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://cructi.ru/uplcv?utm_term=love+story+romance+games+with+choices PDF link annotation
- https://serpavenger.com/ckfinder/userfiles/files/ruxuxifijuxajodut.pdfIn PDF document text
- https://pierrelemagicien.com/userfiles/file/84021985940.pdfIn PDF document text
- http://abdon.madteam.net/ckfinder/userfiles/files/48724358176.pdfIn PDF document text
- http://erainbowrealty.com/userfiles/file/wamolalone.pdfIn PDF document text
- http://citescolairedeledit.com/include/file/76120388503.pdfIn PDF document text
- https://www.l-games.jp/js/ckfinder/userfiles/files/gatufuzojev.pdfIn PDF document text
- http://ersatzmonitor.de/userfiles/file/reruwalukuwev.pdfIn PDF document text
- http://seto.cz/uploads/wizusinasolepe.pdfIn PDF document text
- http://itexpertdog.nwoasis.com/upload/files/94702617840.pdfIn PDF document text
- http://lakshimi-kaatsu.com/user_data/packages/default/imgfiles/49946855353.pdfIn PDF document text
- https://vrindaindia.com/php/joseph/uploads/file/99193716286.pdfIn PDF document text
- https://ginecologmuresan.ro/ckfinder/userfiles/files/72213246288.pdfIn PDF document text
- http://techscreening.com/userfiles/files/87622050620.pdfIn PDF document text
- http://qianxi.cn/filespath/files/20210912081750.pdfIn PDF document text
- http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/445d77304a28e1abbb8048ab33ea630c/72541261737.pdfIn PDF document text
- http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614423f71b786---49832575394.pdfIn PDF document text
- http://www.swaving-stalinrichting.nl/ckfinder/userfiles/files/baxibojewewirip.pdfIn PDF document text
- http://zenkatsu.dk/files/fovilafobamoderup.pdfIn PDF document text
- https://serka.com/serka/upload/files/jotuxaxukuvufetab.pdfIn PDF document text
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16137048ae26e1---98343317768.pdfIn PDF document text
- http://fotostudiovaccari.it/userfiles/files/ruxumumesupafosovirumalib.pdfIn PDF document text
- http://www.yeosung21.or.kr/ckfinder/userfiles/files/1630482673.pdfIn PDF document text
- http://vipforiraq.com/userfiles/files/wuluseparejupojo.pdfIn PDF document text
- http://tongchangkj.com/uploadfile/file///2021090803234588.pdfIn PDF document text
- https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/c42eea7617c30770fe02519fe75f7bc6/47813156365.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_off0000d4e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4E5 | 10856 bytes |
SHA-256: daa869121e783b3c73bc0ace7c1f23ab130d88b02b783f68520608d55940dc4d |
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font_01_sfnt_off0000edea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDEA | 18856 bytes |
SHA-256: 648dde9aa7e5f2869600a4c93a6c90ce47608f7d0bebba10aa56d0b062e5b841 |
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font_02_sfnt_off00011e95.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E95 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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