MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting it functions as a link farm to distribute phishing or malware. The document body is unreadable, but the heuristic firings strongly indicate a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9860
Heuristics 6
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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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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=equilibrium+questions+and+answers+chemistry
- https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/smrir6990b9gh4nbdpn1c3pgnq/vebogepofodukanilofoxiwi.pdf
- https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/e4cef0f574adee4bb507891c32f247fe/kodigozuwasuvefu.pdf
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/510cbc254368b83f8c154a4cd7a163b8/nedolu.pdf
- http://studiopignotti.it/userfiles/files/5558471128.pdf
- https://procogs.com/FCKeditor/file/93437648767.pdf
- http://stepasidemedical.com/images/uploads/file/7274607723.pdf
- http://ghioroiu.ro/sites/default/files/file/fizinus.pdf
- https://moto-trend.cz/public/files/fck/file/vusozarejanimafodisumepo.pdf
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d9efd6593c0---36310180492.pdf
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d06bd602da---54608757388.pdf
- http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160889352251b4---zebazukanodijerobones.pdf
- https://www.cpro.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606fbeffb11c1---xejelo.pdf
- http://jagodkaprzedszkole.pl/userfiles/file/28222224530.pdf
- http://soldresold.com/Shradhdha-Mehra/soldresold/final/ckeditorimage/files/85341297286.pdf
- https://kede.org/userfiles/file/56220099778.pdf
- http://sunnysidehighschoolclassof59.com/clients/867562/File/74995301205.pdf
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/f8fa00c7b4040d11c9b99ee646c0eb88/63963062614.pdf
- https://cafepiolho.com/uploads/assets/fovosatepomigapikem.pdf
- https://arhometutor.com/userfiles/file/48782187380.pdf
- http://angelescare.com/userfiles/file/23480439185.pdf
- https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/ee80f9776dc78eb4c356078e51a15eb1/39553344082.pdf
- http://antifftech.com/uploadfile/file///2021061412593360.pdf
- http://oryginalnedekoracje.pl/userfiles/file/98134015554.pdf
- https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/b6c48febcf3f692644c2069e1ef0ffce/40001333728.pdf
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cba076c9be---24413365965.pdf
- http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d628be44bce---37878216828.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_off0000e4ee.bin7a9bb3cc3545435db1c58ce3c573bc317a923f02f3904e16d577c3da97e437ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4EE | 18096 bytes |
font_01_sfnt_off000114fe.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114FE | 16792 bytes |
font_02_sfnt_off00012d15.bin3fd1d802f9ff3aa34ca8de11a932a17e954827176b3c9f0f1dcb2f4b1f6e498c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D15 | 11204 bytes |
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