MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm with numerous URLs pointing to compromised websites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is heavily obfuscated and appears to contain metadata rather than user-facing content, further supporting the malicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://archism.ru/uplcv?utm_term=foli+build+raid PDF link annotation
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bcfe5297698---90187627577.pdfIn PDF document text
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/e0kffgcdvbo0jnf223o3kknr27/11116454191.pdfIn PDF document text
- https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/e0a5545a73af1325f7bce2b629cb8db7/84515555941.pdfIn PDF document text
- http://casaperferiesantamariagoretti.com/writable/public/userfiles/file/31381953622.pdfIn PDF document text
- https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078c67a6f5c4---nilewulekepe.pdfIn PDF document text
- http://sewakendragroup.com/userfiles/file/fodaworufinepuwitu.pdfIn PDF document text
- https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/055dd957b217ab23fdd1e2a91fdb6567/lipelafemulamepurulebefoz.pdfIn PDF document text
- https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160925e13d37d3---zuxizumut.pdfIn PDF document text
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9233d15cc8---wawisetusitelomevatuzuris.pdfIn PDF document text
- https://beautyyaurient.com/editor_upload/file/83237668451.pdfIn PDF document text
- http://classicalgardenornaments.com/uplds/file/kozifegukobemoguwu.pdfIn PDF document text
- http://kingalbertltd.com/uploadedfiles/file/95172370364.pdfIn PDF document text
- https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/ctdi0234np90fcsosdrb9cu85s/62864655976.pdfIn PDF document text
- https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/f899c3f318c0b0fcbe014640483d9eeb/nafevutoroxewok.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000eadc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEADC | 4736 bytes |
SHA-256: f583aefd855659e2e239662dfa199e12f0e4df2da14071ef3e2d5fdd7302e02d |
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font_01_sfnt_off0000faf1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAF1 | 2904 bytes |
SHA-256: 581ffc7af0c66c67eff9b0de84152a2147fd1f905f59fe6dcfb74213e9687df5 |
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font_02_sfnt_off000107a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107A4 | 11500 bytes |
SHA-256: 26b4d1cbcbc073563dcfcf0443454b65b75cf680055741ab6281f74588a0fa35 |
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font_03_sfnt_off00012f1a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F1A | 16300 bytes |
SHA-256: e5da5ff478eaf3d13697437b0c0581e12434744fbafac38e3cb5d572924b18b5 |
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