MALICIOUS
156
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, many of which point to compromised WordPress upload directories, suggesting a link farm designed to lure victims to malicious content. While no scripts were directly extracted, the nature of the embedded URLs and the detection signatures point towards a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/8f400b369613844c4dad9ae09646a9d1/bimonopu.pdf In PDF document text
- https://hr-serdahel.hu/images/file/fegekilirujujigodujefob.pdfIn PDF document text
- http://cambridgekapurthala.com/damana/userfiles/file/wusupoz.pdfIn PDF document text
- https://balbok.net/admin/ckfinder/userfiles/files/98114204628.pdfIn PDF document text
- https://cosanuesa.com/componentes/editor/ckfinder/userfiles/files/zegoxexotinilixol.pdfIn PDF document text
- http://nuestrasenoranm.org/clients/8/88/88a18899c67a61641ca1f7d027daa919/File/40736976864.pdfIn PDF document text
- https://oncallanatomist.org/ckfinder/userfiles/files/tufasalavewekimexuti.pdfIn PDF document text
- https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8fec9808c395ab40fcae722c37dfeaad/dupubasuwedawutede.pdfIn PDF document text
- http://gongin.humenia.com/upload/userfiles/2021/08/files/210829220214.pdfIn PDF document text
- http://ccsup.co.th/uploads/ckfinder/files/zojifevonuraxem.pdfIn PDF document text
- http://soles2walk.cz/data/file/82193080943.pdfIn PDF document text
- https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/dddbed604797fcfd6a355dcbe05d0a77/56957472653.pdfIn PDF document text
- https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/tvhmnq4klrfc0ig57p0enjlsn7/divulajubiwidovogaxu.pdfIn PDF document text
- http://2440027.ru/upload/file/ginikufoxoxitulokik.pdfIn PDF document text
- https://nazrabilisim.com/calisma2/files/uploads/28210684378.pdfIn PDF document text
- http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16073de7ca07f1---68617991045.pdfIn PDF document text
- https://polymadeniyaglar.com/fckeditor/userfiles/file/wepuboj.pdfIn PDF document text
- http://rld-carbon.ru/file/sojigesufobe.pdfIn PDF document text
- http://computer-rudolstadt.de/upload/file/xinawonikepatexejimumusi.pdfIn PDF document text
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/160885f2d6c032---jajiditarepobokiden.pdfIn PDF document text
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/orj0fe0e256ohspitjglcuml25/17467864292.pdfIn PDF document text
- https://avigailpekelman.com/sites/default/files/file/gufis.pdfIn PDF document text
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a08e4855655---woxaguwuvokaxupere.pdfIn PDF document text
- http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6d42419b4---65874776561.pdfIn PDF document text
- https://bedandbreakfastholten.nl/userfiles/file/biwakiv.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=mapa+espa%C3%B1a+comunidades+autonomas+mudo+pdfPDF link annotation
- 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_off0000f1bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1BD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000109cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109CF | 19348 bytes |
SHA-256: 990f69cde2e0d4780d987aec3afd8b3702a8f65f489cd2b78288e0289d285e47 |
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font_02_sfnt_off00013a90.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A90 | 10932 bytes |
SHA-256: 351e6782bffcffddbbff8998a89424c95b394f220e2e4d29d10b467c9c186a1a |
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