MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains multiple links pointing to compromised WordPress upload directories, suggesting it's part of a phishing campaign. The 'SE_INVOICE_LURE' heuristic indicates the document's content is designed to trick users into clicking these links, likely to download a secondary payload or redirect to a malicious site. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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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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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://irlanc.ru/uplcv?utm_term=today+show+ratings+2021
- http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a341b92829---39873397993.pdf
- http://ascensionchina.com/userfiles/file/2600817416.pdf
- http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1606eb67999b81---88756153207.pdf
- http://budoprojekt.eu/obrazy/file/12518349593.pdf
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092170cdb185---13823319848.pdf
- https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/6puf4icntvo592r5gt99gffmic/jegatupulelimagowejuz.pdf
- http://kamerton.nl/clientfiles/kajawapemiva.pdf
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/5e0ad306f2e71880ed1e1ceaa3d5c502/potebubibokuzaguwemiloxo.pdf
- http://rajskiewakacje.pl/userfiles/file/45501028445.pdf
- https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/b3c0390047588bc1a70ee5b1328b09c8/47086127380.pdf
- http://argyler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078bde8eedc8---10344112863.pdf
- https://m3csrl.com/file/77376371014.pdf
- https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160843edb1789a---libebiwipuparewovupabe.pdf
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/87q5sn3fvkncgd8di8i23a7pl4/79179415425.pdf
- http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609b75c13848b---xoxiwaguxej.pdf
- https://vestol.bg/files/file/78254023898.pdf
- https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076e56d4ed0a---93119472602.pdf
- http://boothbayharborshipyard.com/userfiles/file/tapijuwoxumisilege.pdf
- https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/211b874ceaec7e8c102d3d5bdd6860e3/kufupukigakenoxulapababiz.pdf
- http://topas.lt/userfiles/file/75046393658.pdf
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/bd9295c4a28538ca6d2c808dc3256e0d/nefiburisufo.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_off0000ec85.bin9443e951d369d319b9cce2a45347a3a07fc0771a38f7e623e9c0434fd90009c0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC85 | 17532 bytes |
font_01_sfnt_off00011a64.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A64 | 16792 bytes |
font_02_sfnt_off0001327b.bine35af980fef3d91100416452d6b7c84dc52b41925c2b34da7bb61d5d12c71aac |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1327B | 10808 bytes |
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