MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable hosting, suggesting a link farm or phishing lure. The presence of multiple PDF-specific heuristics related to URI and link farms further supports this. The document body is heavily obfuscated and unreadable, providing no direct content clues.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/dvb8ovk5engq3plt35o8b0kscm/zepemusawugorarakalalow.pdf In PDF document text
- http://strap.sk/uploads/files/pukop.pdfIn PDF document text
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/d4e9bfd873b539e4831cf2763da2fd6a/fotuwewegatosu.pdfIn PDF document text
- https://anjingliar.com/contents//files/54030570276.pdfIn PDF document text
- http://biosite.ru/images/news/file/40429640933.pdfIn PDF document text
- https://adreshosting.com/calisma2/files/uploads/2812635149.pdfIn PDF document text
- http://ural-resyrs.ru/data/file/91014070394.pdfIn PDF document text
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc31a585c90---41365566207.pdfIn PDF document text
- http://1544-7419.net/upload/fckeditor/file/61094210739.pdfIn PDF document text
- http://101eyewear.com/luutru/files/rurup.pdfIn PDF document text
- https://cli-kh.com/uploads/files/202108150624322984.pdfIn PDF document text
- https://sambelteri.com/contents//files/88323917084.pdfIn PDF document text
- http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/69847986773.pdfIn PDF document text
- http://schodylux.pl/userfiles/file/votiverem.pdfIn PDF document text
- https://creativitagh.com/pevron/www/img/file/xebokilazilazapebukuvo.pdfIn PDF document text
- https://www.shinoda-usa.com/ckfinder/userfiles/files/55217924770.pdfIn PDF document text
- http://pampa.be/uploads/userfiles/files/83442516910.pdfIn PDF document text
- https://dispecom.com/cms_dispecom/sgi_userfiles/userfiles/files/vixaniwunuji.pdfIn PDF document text
- https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/hrj6hgnill6v9o4ilj9r8k03mh/jafufazobuvoruvodijor.pdfIn PDF document text
- https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/12dbd1cb2f745546ff238f95118c5727/26270152126.pdfIn PDF document text
- http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100c1e8b46cc---53043759709.pdfIn PDF document text
- https://xn--interpeas-r6a.es/upload/files/27000872642.pdfIn PDF document text
- http://interstroy96.ru/uploads/files/donadezukewujob.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=chrysler+pacifica+2018+owners+manualPDF 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_off0000d04b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD04B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e862.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE862 | 11480 bytes |
SHA-256: e0ab1042a9881c6c7e417fc6af1aaae1c57d1de234c331dda31152bb295b8882 |
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font_02_sfnt_off00010381.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10381 | 16772 bytes |
SHA-256: 09fd992cb07e2d07b51d03f35f695d51301c5ddf4d6d61b55a3cdddb1fb2ad29 |
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