MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099b8a95b12d---neguripudirit.pdf In PDF document text
- https://medprobr.com.br/wp-content/plugins/super-forms/uploads/php/files/51f5ccea84161d8aa5626a0f20b6040a/11283751507.pdfIn PDF document text
- https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/9901ad9ac86b532cc32d53516a74bd08/6769814915.pdfIn PDF document text
- http://albatrossmrn.com/konadnew/userfiles/file/pojaruzonuwow.pdfIn PDF document text
- https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/9917fc5f57d955bfe888f1023e760fb0/jowuwulemovilebuviwuxanu.pdfIn PDF document text
- http://boxerdapolenta.com/cmsimple/images/file/wakowumopovolefuroligo.pdfIn PDF document text
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b0703f9c8---25347689781.pdfIn PDF document text
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb15dab8b8---jerijuxixodewajetaguwugen.pdfIn PDF document text
- https://smilepaper.tw/archive/upload/files/98032592535.pdfIn PDF document text
- https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/2554b0ed91d07e1a42ed2152b22ad05d/simiva.pdfIn PDF document text
- https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/49a58edeab516fb1c1372a1ed6f87d4f/dizoperefavimew.pdfIn PDF document text
- https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095ce3dcbab4---gumipibimadu.pdfIn PDF document text
- http://talleresjpg.es/img/file/31602195777.pdfIn PDF document text
- http://bjeclinic.com/ckfinder/userfiles/files/99701300065.pdfIn PDF document text
- https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/5190g1494bea79nkt6ef917i9d/govakova.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=naruto+jutsu+hand+signsPDF 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f3b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3B8 | 4516 bytes |
SHA-256: 4bc291a412eec4fe0816169ce80b9925f057b15dd69d6af3e8940e4509a4cf31 |
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font_01_sfnt_off000103a9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103A9 | 5100 bytes |
SHA-256: 740d98dbf2b8d306829620bbb48d8ce33332fe7f2dc0a1dab0ff94f9f7c8bd08 |
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font_02_sfnt_off00011501.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11501 | 11288 bytes |
SHA-256: 42bd027746cbfc62bef840bfa49a2e015bd291bf376fbaef83c5f3b01212fd7a |
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