MALICIOUS
180
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample contains embedded JavaScript and a link farm pointing to compromised WordPress sites, indicating an attempt to deliver a malicious payload. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The presence of a fake invoice lure further supports a phishing or scam-related attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9860
Heuristics 9
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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 http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/c2d16bc3cf9efa9016ff97c86341a9c0/79120725574.pdf
- https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160acb2f14efb8---tutajivumovefif.pdf
- http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac74382c8b2---fativuwabuwubebo.pdf
- https://iwnta.com/userfiles/file/tixafu.pdf
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aebbc681dc3---salijuzerorulogube.pdf
- http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089aa29559d2---zivuje.pdf
- https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/b68da627c1882571561447e731081024/lomodufexovupemudevidom.pdf
- https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/076d3ivd6gi92cins515o1c84d/97183128075.pdf
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc2bc1d0a1---56588462029.pdf
- http://kwong-cheong.com/userfiles/92513386165.pdf
- http://doverhighschoolhalloffame.com/clients/2/2d/2d76883e1086210ef8e2c43836b0327f/File/48220459393.pdf
- http://k-ookuma.com/js/upload/files/tasogesexekobigevudu.pdf
- http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/cc009afbfb6d657448b83e32a6ae6b67/66661588903.pdf
- https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/48tt3qmr5grrb9sr8judl5ogc1/sugumutobonutosuledavav.pdf
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c57ede976fe---mimiku.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/16086e0532867d---lavanogo.pdf
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/696b4058b6578e418c661a4b080fc7a7/76650742641.pdf
- http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8d3237425---84564436738.pdf
- https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/dgr6rscinotko0p28ro6cn61um/98404348941.pdf
- http://lambanghieuquangcaogiare.net/vietkiendo/upload/file/toxuruberonezojibinan.pdf
- https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/4a00264d58cee8613de32e1386053223/59401305164.pdf
- https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/ac6580h46f7qinkfp6e30243td/49139638074.pdf
- https://almuhja.ps/ckfinder/userfiles/files/baduboroj.pdf
- http://nexxosrealty.com/userfiles/files/bevowarajerejat.pdf
- http://mextro.de/upload/files/gevefopotulezagakatuxu.pdf
- https://creativitagh.com/pevron/www/img/file/86871946953.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=pediatric+policy+and+procedure+manual
- 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_off0000eadc.bind7d6eb15d667b10013c817b0728a841f57aad8c0d6f6c4832004f542cf2d686d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEADC | 16404 bytes |
font_01_sfnt_off00011568.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11568 | 16792 bytes |
font_02_sfnt_off00012d7f.bin8d209853fdd8761a6c63e95e8cd1026e26888fada2766e9f02e256cfb3c4308e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D7F | 10720 bytes |
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