MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded JavaScript and numerous external URIs pointing to compromised WordPress uploads and disposable hosting suggest the document functions as a link farm. These links likely lead to phishing pages or further malware downloads, aligning with a spearphishing attachment attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://ketchas.ru/uplcv?utm_term=best+task+killer+for+android
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1612f10b5bfa70---79197046225.pdf
- http://limobebe.com/userfiles/files/76172768276.pdf
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161425abb60da5---denag.pdf
- https://durgabas.coop.np/ckfinder/userfiles/files/48847659255.pdf
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/gh99vf3jjvc5p9f4gikfmjkeu2/bosipesajusil.pdf
- http://slstudio.it/userfiles/files/76054248050.pdf
- http://sergeybazarov.ru/file/94180731571.pdf
- http://wajl.net/img/file/20219632956.pdf
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16146926cdf1c9---30389761685.pdf
- http://audyt.rowerowaszkola.pl/imgturysta/files/65046251840.pdf
- http://trevelsi.ru/ckfinder/userfiles/files/bagexava.pdf
- http://royal-pizza.eu/files/file/11634639570.pdf
- http://www.deco-interieure.com/userfiles/file/mokunufusasido.pdf
- http://geomanteia.com/userfiles/files/doraxuwilivosaduw.pdf
- http://www.fashiongale.ro/userfiles/files/55157887289.pdf
- http://smwiarus.pl/ckfinder/userfiles/files/34384751563.pdf
- https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/962d7004f27d1346081f96d87c012e3b/41888519115.pdf
- https://glaskunstcentrum.nl/images/file/guwelomanomumeburo.pdf
- https://imad0c0.com/js/ckfinder/userfiles/files/82474412383.pdf
- http://sonnenheizung.ch/fckeditor/editor/images/file/33875799317.pdf
- http://3e3i.com/UserFiles/file///lomavisosulagopovavijeror.pdf
- https://hankilfood.com/userfiles/file/20210921135506.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_off0000b977.bin0d5502b6a9f7af8d928f2847b2ffd25211cb2bbf6e2bf6dba972ce1d0202be01 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB977 | 17156 bytes |
font_01_sfnt_off0000e577.bin23b587bcf1a0b92acb486f994b08ae1c22b975fe3be23ae1f16f9b4716b56c89 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE577 | 10492 bytes |
font_02_sfnt_off0000fd7a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD7A | 16792 bytes |
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