MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a link farm pointing to numerous URLs hosted on compromised WordPress sites, suggesting a phishing or malware distribution campaign. No scripts were extracted, but the presence of external links indicates an attempt to redirect the user to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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://chcial.ru/uplcv?utm_term=spelling+of+behave
- https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/9b20e1e4633863c430e12df6613a0c5b/74122651616.pdf
- https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/38240b3bd9773d715785f21e40d55720/taleso.pdf
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/0aff2ef1848352fc2dbedb5c70ede200/pewudadadusini.pdf
- https://smilepaper.tw/archive/upload/files/zudotumerofisupilixok.pdf
- https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/08c8bd98aee12a6ae18e96a2f8aede7a/41420411024.pdf
- http://keletunderground.hu/images/uploaded_pics/file/jajevakakudake.pdf
- https://hainutedecopii.eu/ckfinder/userfiles/files/nejapabired.pdf
- https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c57067af3aa---98848108886.pdf
- http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aa4dadb1fd7---zujovunopudogimilafewakas.pdf
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd1fdec0b4---jewipalodexepovefuxutugif.pdf
- http://4bx.pl/public/file/88057330292.pdf
- https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9f07289f6---37764844972.pdf
- http://digimaap.com/wp-content/plugins/super-forms/uploads/php/files/eh4179h9bvil0pv8l8vatrvla9/kanuliwemoze.pdf
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd51cf3d8a---17919725380.pdf
- https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/54rc2gvkc7jf67fhuj91u1358t/9082704324.pdf
- https://gruntbudowa.pl/files/file/fulutuzibetuw.pdf
- http://ankaser.com/userfiles/file/84064741003.pdf
- http://fzcce.com/aimgs/uload/files/2049704278.pdf
- https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607288abb1265---57845676130.pdf
- https://cailux.lu/userfiles/files/56301514975.pdf
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160721a2ca45a7---99221599228.pdf
- http://cedule-plachty.cz/files/file/8615684873.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_off0000c666.bind09b2e0d295ea2fbcf9007c6e52e25a89d01a9bdec16f61eb6a66c22aec892a4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC666 | 10552 bytes |
font_01_sfnt_off0000de25.bine71d8e0f8cf1dfa83ba872d6e98ab48f2ee799042dd85589b3e5efd7b105d11c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE25 | 17796 bytes |
font_02_sfnt_off00010d03.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D03 | 16792 bytes |
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