MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous links to external websites, many hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this. The primary goal appears to be directing users to potentially harmful sites, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 https://synerhu.ru/uplcv?utm_term=visual+basic+app+for+android PDF link annotation
- http://cybernet-ap.com/UserFiles/File/wupefetosipiporuzazojuk.pdfIn PDF document text
- http://dichvugiayphep.biz/upload/ck/files/wopimune.pdfIn PDF document text
- https://stpm-sa.com/userfiles/file/tukatuvaji.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142fa2ce6954---kiguna.pdfIn PDF document text
- http://cyklo-sport-servis.cz/UserFiles/File/26599398404.pdfIn PDF document text
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/a37a6d64bbb8e16453ffc8e56e2d5c4e/xomusufawoponidubelow.pdfIn PDF document text
- http://superlitefan.com/uploads/files/81863296842.pdfIn PDF document text
- https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/16138bc82ca7e2---paratekeki.pdfIn PDF document text
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/161316aea6a3dc---98122750414.pdfIn PDF document text
- http://emrc.ie/upload/imagecontent/file/62892729559.pdfIn PDF document text
- http://abnigakgdsg.friendship-match.com/upload/files/5824124568.pdfIn PDF document text
- https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/161501bc684a6a---lizobuloledodizevuvu.pdfIn PDF document text
- http://dexgerm.com/data/file/userfiles/files/bolazokod.pdfIn PDF document text
- https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/6fffe069064ced7f90c9c0e890728fe0/resobuw.pdfIn PDF document text
- http://fabriziocar.it/userfiles/files/meputeg.pdfIn PDF document text
- https://samsungdvmklima.com/upload/ckfinder/files/52369907677.pdfIn PDF document text
- http://brmhn.com/userfiles/file/20210919103418_4ls3fj.pdfIn PDF document text
- https://manhremhoangvan.com/wp-content/uploads/files/90131855436.pdfIn PDF document text
- http://fszhenjia.com/upfolder/e/files/20210918080126.pdfIn PDF document text
- http://reklama-kemerovo.ru/files/files/nokesepexinafuvuk.pdfIn PDF document text
- https://emartdeko.pl/galeria/file/6053349669.pdfIn PDF document text
- http://asiancfea.org/userfiles/file/75604233296.pdfIn PDF document text
- http://dalnoboy.org/data/filestorage/upload/files/59444010374.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_off0000ae72.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE72 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c689.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC689 | 10592 bytes |
SHA-256: d72145b10821ebcd935206ddc87fb1a18c677dac70b56063efb56bd8aa07c467 |
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font_02_sfnt_off0000de89.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE89 | 15500 bytes |
SHA-256: 5774002480bb4bf6b08b12e09fd8167c115cb6359c7ccc128e60e95eb79e9c42 |
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