MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript and numerous links pointing to compromised WordPress sites. These links appear to form a link farm, a common tactic for SEO manipulation or directing users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/8i400euif8vmftfdhoocsr5ao5/82573679241.pdf
- http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160af838cbe623---tuwanisowofexexobukomufem.pdf
- http://oldtimerclub-thueringerberg.at/images/file/55255261413.pdf
- http://ecohort.com/userfiles/files/79726663721.pdf
- https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/ba8de462485ed75b5f8362dd1ac451d1/sumobasukezufasibabaseviz.pdf
- http://vinhomeshaiphong.net/app/webroot/img/files/xekabev.pdf
- http://myconnect-thailand.com/image/upload/File/judokafuxaw.pdf
- https://www.ndgai.com/wp-content/plugins/super-forms/uploads/php/files/bbd8p565r47dt91edqggdt759t/rojarivamirasubu.pdf
- https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/68afab9322d071de3e55f03c22f71374/44025394858.pdf
- https://bouwservicewinthagen.nl/userfiles/image/file/65937722213.pdf
- https://kodcomputers.ro/2664/uploads/36110084607.pdf
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160833b6c23e36---wozagaxinugerut.pdf
- https://intellicapital.in/ckfinder/userfiles/files/voxewiregivivusaj.pdf
- https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acb016cca0f---mukoto.pdf
- http://zimmerei-possert.at/bupedilekob.pdf
- https://institut-arabe.org/ckfinder/userfiles/files/16937967705.pdf
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/nalean2f4nuj7ljluoadfn9ir7/86299210536.pdf
- https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861b62891aa---gejuxororiburugununutupa.pdf
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/2e5d10eadb16661773af68be1042baa4/5021052717.pdf
- http://ximangsongthao.com.vn/app/webroot/uploads/files/dukene.pdf
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608299d062d07---vaxujol.pdf
- https://tndvn.com/js/ckfinder/userfiles/files/kirotuposok.pdf
- https://gagiongvitgiong.com/ckfinder/userfiles/files/43480078113.pdf
- https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf22bf2085---18452907396.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=how+do+i+manually+save+passwords+in+chrome
- 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_off0000e1a4.bin29c02e5d75dc257cd6cb572b3f9415341a391b3d82ff344a2b5ccad132472e01 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1A4 | 11040 bytes |
font_01_sfnt_off0000fb1f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB1F | 16792 bytes |
font_02_sfnt_off00011331.bin06285aa48a7e081b1e190bd07c1e85c041e005cc64136be55fdd9844d82d4053 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11331 | 17588 bytes |
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