MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. The heuristics reveal it functions as a link farm, directing users to various compromised WordPress upload directories and disposable hosting sites, likely to download further malicious content. The presence of embedded URLs and the 'Fake invoice / payment lure' heuristic suggest a social engineering tactic to entice users to click on these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://andrejc.si/files/file/lululorejutulo.pdf
- http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b60664278e5---53509811353.pdf
- http://bendhorseride.com/userfiles/file/dufunokogekezemafekotemuz.pdf
- http://bioident.pl/photos_fck/file/85008126318.pdf
- https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e409a81385---nuzidevifinidari.pdf
- http://barcelonasixtytwo.com/userfiles/file/jizumujerakunew.pdf
- http://topas.lt/userfiles/file/roxukutidukul.pdf
- http://lohsclassof70.com/clients/3/31/31ca850ff086a58b81c8700e10a01852/File/76985164185.pdf
- https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/c7359d27dbd386388013fcb44cbd1f36/momapavimogozoranufi.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608923a95df2c---74968709910.pdf
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa4b07b335---duvibuzufizagut.pdf
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bb71c65f82a---24251500167.pdf
- https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/e84e2073ef08734ab6038b748aa61138/84757548608.pdf
- https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/b0228793f4b1b39bcfb772ff4bf17b43/10232046406.pdf
- https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/o0p7palns84acrj73vneakoscl/84929020757.pdf
- http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/06d5f6ba38ac80614a40b69b97685abf/65878180258.pdf
- https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/08fd58ce82972335080cc81f4ac495c7/konisolefijubegov.pdf
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/rla7gu5cd5to9082ukp0j3rf86/xugetisawug.pdf
- http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a49eb38bcea---manenurawamixilaxemosozol.pdf
- http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/c7432cb85bb7b15dc1af8f4d1777646a/bagegeludatabuxo.pdf
- https://genericdiabeticteststrips.com/userfiles/files/68691358561.pdf
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4fb48873f---gafajusisuxaw.pdf
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/d42e1391e8f5c6b2a518f12b4aa88f61/puwupowaruwewotavobuj.pdf
- http://garmagostaran.com/Upload/file/falotememububemewu.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=katy+perry+in+red
- 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_off0000edbd.bin4d6a98ee70b462b1542e58158135dc1ae0fe6cba174a1cb725c2ecda07c31933 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDBD | 18336 bytes |
font_01_sfnt_off00011e16.binb03e31189e5a6082a329985a2495c81bc9cd864d72b9e291df120fd55881ac7b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E16 | 10156 bytes |
font_02_sfnt_off000134ef.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x134EF | 16792 bytes |
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