MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm or SEO poisoning attempt. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL analysis indicate a malicious intent to redirect users to potentially harmful external content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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 http://autodilykanka.cz/cmsimple/images/file/87057392873.pdf In PDF document text
- http://isvpro.com/custom/files/1577284750.pdfIn PDF document text
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160819c849c1a6---dufuvawer.pdfIn PDF document text
- http://globalbando.com/DATA/upload/files/202107272134103074.pdfIn PDF document text
- https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160d1ddb2f0f28---vifojufa.pdfIn PDF document text
- https://cytokin.ca/upload/editor/file/pavejofel.pdfIn PDF document text
- http://salt17.com/userfiles/files/20577986415.pdfIn PDF document text
- http://bscsaoner.in/ckfinder/userfiles/files/25829309681.pdfIn PDF document text
- http://alituncer.com/userfiles/file/siwujironisadozejogizemem.pdfIn PDF document text
- http://golden-candies.ru/webroot/files/files/51672876181.pdfIn PDF document text
- https://www.willmarshelter.com/ckfinder/userfiles/files/98829635900.pdfIn PDF document text
- https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/2ov51r98ogth4mougqt423vph1/nokibuvakekozufezuvolaz.pdfIn PDF document text
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c8eb8be2e07---rogowevixanimusufas.pdfIn PDF document text
- http://yaqeen-eg.com/userfiles/file/piginaxunatafafuwawulu.pdfIn PDF document text
- http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbe4cc9faf---wulufaxo.pdfIn PDF document text
- https://vannordenvastgoed.nl/userfiles/file/zewifameb.pdfIn PDF document text
- http://pagyesa.org/userfiles/file/20210624193109.pdfIn PDF document text
- https://joebalogh.ro/imagini_ws/puzatutibetalonokofa.pdfIn PDF document text
- https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/19449836ecc191dbcf142b2cef5ddcc2/pitejenorisagosojeput.pdfIn PDF document text
- https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/443edd9d74b2d65df95e1b14bdeabab2/6050806849.pdfIn PDF document text
- https://www.milestonesmn.org/ckfinder/userfiles/files/fudikuvirasugobodesedew.pdfIn PDF document text
- http://residenzaeden-albisola.com/userfiles/files/68063742788.pdfIn PDF document text
- https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/cb91fbdfddbb940e4337a76d87bbbe64/semelif.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=christopher+isherwood+the+world+in+the+eveningPDF link annotation
- 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_off0000cd42.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD42 | 10692 bytes |
SHA-256: 336d2344297fabb1f091c9e28138c9a45049114b28da1086146471ce778b7da5 |
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font_01_sfnt_off0000e595.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE595 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fda7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDA7 | 17028 bytes |
SHA-256: b6f48fb0fa4f59e102646b7e05be4957218b94e68cb704ce1deef6e127650c36 |
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