MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and ClamAV as malicious, specifically as a phishing or trojan delivery mechanism. It contains a large number of external URIs, many pointing to compromised WordPress sites, suggesting it's designed to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a deliberate attempt to create a link farm on potentially compromised infrastructure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9938
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://archism.ru/uplcv?utm_term=strength+and+resistance+training
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b2e68a94b9---lebazo.pdf
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/o3ejij6u6d697772s1r5rpj854/nemejidizo.pdf
- http://adabaskimerkezi.com/upload/file/werapepibaguj.pdf
- https://eventaipei.com/upload/files/69641585722.pdf
- http://casaatlantida.com/userfiles/file///44315695798.pdf
- https://ocw.tw/uploads/files/60750659279.pdf
- http://maxgear.cz/webpagebuilder/ckfinder/userfiles/files/54032997500.pdf
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/97a3b0f8faa9c9ad874ad2f6db6ad267/xurifuvuvesajozowunu.pdf
- http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16085decc5846b---nekepanowew.pdf
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/0635c6d60fa8ee1b8d64f05a1bdc0415/defugetubonuf.pdf
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a677846463c---33523293897.pdf
- https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160874fde0e813---nijitodifufutofup.pdf
- https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/qpt1v8qbs228isnusksdmpo3cp/wegaxisepanexopiwedaxudes.pdf
- http://hotstamping.pl/files/file/53356641140.pdf
- http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d77095fbd0---fidibarositubulosini.pdf
- http://masterref.ru/editorfiles/file/11906262007.pdf
- http://phoiinnhiet.com/images/uploads/files/pitawoto.pdf
- http://yuha.be/_files/file/sowidowad.pdf
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbb11a882f---dulupexanilori.pdf
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/350e8e9043db83bec6a1cc19d07e9883/62098446518.pdf
- https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/f448e2c59081248b91c3162fa2155c9e/39938326791.pdf
- http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160aa6078bcf61---suvalavewevixelaruta.pdf
- http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9c8099929b---ruzorurukaj.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_off00012c07.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C07 | 16792 bytes |
font_01_sfnt_off00014419.bindd086d91275e7e2e39d9f293003c0b2f8288c70554ba450f84fbdbbae9447531 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14419 | 17940 bytes |
font_02_sfnt_off0001730f.bin5e69f6833b2090e80dba4afb729c823630f11f225afb946a6a41c53690c17316 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1730F | 10560 bytes |
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