MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs pointing to compromised CMS upload directories, indicating a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier strongly suggest a phishing or malware distribution intent. Although no scripts were explicitly extracted, the nature of the embedded URLs and the heuristic firings point towards a malicious document, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9925
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://ketchas.ru/uplcv?utm_term=plantillas+de+letras+lettering+para+word
- http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a73693556a2---jizerobusanagixiron.pdf
- https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/oqeos3u1gjq8h14a1ta6vn92rf/938252818.pdf
- https://dacinsara.ro/fckfiles/file/26309422436.pdf
- https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/6a0d4f7cabfe051ee1794ac77d1a41dc/35728504844.pdf
- https://nic-irq.com/userfiles/files/12680418179.pdf
- http://files.ibiza-ferien.de/file/81889236490.pdf
- https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/c779956a7a8f90d4f36b8c3237c07350/12221297371.pdf
- http://yulintimber.cn/d/files/bedipafaduxupipixe.pdf
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079fcbaba30e---23650911473.pdf
- https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/287ec5b09ff38f16e1b8faa38ae81dab/45404795381.pdf
- http://veno2.com/upload/12768681671.pdf
- http://austral-immo.com/userfiles/files/98192267535.pdf
- http://ceresasrl.it/userfiles/files/gimupesizur.pdf
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a5e6be8bd9c---tufoditos.pdf
- http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b52e11cf7d---48808887000.pdf
- https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/4accb61b799bcf8c21afbfb30178daea/48223079838.pdf
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c857155b4e1---20498601695.pdf
- https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/f986f05ffe5e6cec34b4bbd7b33e05d8/17946526540.pdf
- http://rajskiewakacje.pl/userfiles/file/tasiwaromitiregiwiwiso.pdf
- https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/af9e1ea60f6eea892b9e57be693a81b5/95164314724.pdf
- https://cailux.lu/userfiles/files/41243675494.pdf
- http://elfuklid.cz/foto/Image/file/11364265141.pdf
- http://galluccifaibano.com/userfiles/file/22720887323.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000edca.bin56b241a8a505edd7a0f05445d6eae268db883e476530193a1698a05d096efb90 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDCA | 17456 bytes |
font_01_sfnt_off000119e7.binee1b181a11b9c6fc05fc42a2fbf5889817d77dc1bc32b3549472b6dd4bce8175 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119E7 | 16084 bytes |
font_02_sfnt_off00012f24.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F24 | 16792 bytes |
font_03_sfnt_off0001473b.bineb24e7a6198cd4a3a08da9f715ba7c5f2ee41152232e83ba6bda7748674daa66 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1473B | 10656 bytes |
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