MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, many pointing to compromised CMS upload directories, suggesting a link farm designed to redirect users to potentially malicious or phishing sites. The presence of embedded URLs and the nature of the heuristics strongly suggest this PDF is part of a phishing campaign, likely using spearphishing as an initial access vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://catamma.ru/uplcv?utm_term=muscle+building+diet+plan+pdf PDF link annotation
- http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a74ea4189d---sodiwerit.pdfIn PDF document text
- http://bitite.lv/media/txt/122/file/8795562764.pdfIn PDF document text
- https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160721e1a2d13d---28032470514.pdfIn PDF document text
- http://eventclub.pl/userfiles/file/risiwadu.pdfIn PDF document text
- http://zeminyerkaplama.com/upload/ckfinder/files/37886103542.pdfIn PDF document text
- http://stevis.cz/files/file/robuvibitudogoj.pdfIn PDF document text
- https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/skcan3ftgkhtmfkj00j2kvq6th/33041418326.pdfIn PDF document text
- http://dush-kz.ru/uploads/fck/file/datuwikuzabilax.pdfIn PDF document text
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a307e53a6e7---88157899620.pdfIn PDF document text
- http://mvclassof1990.com/clients/8/8c/8ca0ba2c7a07c5cd1f21f9fc323c16c5/File/22319694231.pdfIn PDF document text
- https://f27szerviz.hu/upload/files/11378347358.pdfIn PDF document text
- http://mya1fc.com/files/ckuploads/files/65971096876.pdfIn PDF document text
- http://sattamatkapatti.com/userfiles/file/kivedekenonirewozozarufit.pdfIn PDF document text
- http://orem.mn/uploads/files/8340928551.pdfIn PDF document text
- http://dd-eng.com/files/files/lesefunasam.pdfIn PDF document text
- https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160912c2299933---5841525299.pdfIn PDF document text
- http://aelma.com/sites/default/userfiles/file/42811891008.pdfIn PDF document text
- http://chekeeh.ir/basefile/chekeehir/files/pijotumutunimimuva.pdfIn PDF document text
- http://avision-italia.com/userfiles/files/viguxamurasabafipuret.pdfIn PDF document text
- https://kominove-centrum.cz/media/files/file/norubiwigi.pdfIn PDF document text
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1607479ba69b17---42390486739.pdfIn PDF document text
- https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/df27408d87bea434b7dcaed35bf6e9be/93530345392.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d6d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6D2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000eee9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEE9 | 10808 bytes |
SHA-256: 889d404c4d0765f5bffd5f52d0b216635e1fb3e5db0668bd377878c1c97c5f1e |
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font_02_sfnt_off00010785.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10785 | 17548 bytes |
SHA-256: 026d856c303092a79e5ba07963ba2bb0b092840758bc7101bf0b8e269ae47983 |
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