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://amoy-art.com/Upload/file/59584361077.pdf In PDF document text
- https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b650b832782---9114653974.pdfIn PDF document text
- https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/ff1e24dd9a2bc04124d71cbea9a004ff/felakaguso.pdfIn PDF document text
- https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/4rsebenii90okauguv301m3uq6/tolegenozor.pdfIn PDF document text
- https://hitourkorea.com/FileData/ckfinder/files/20210608_74E02E741A8A04EB.pdfIn PDF document text
- https://caribemed.com/userfiles/file/22093978501.pdfIn PDF document text
- https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160b64f07aabb1---xosepitozokefokegukix.pdfIn PDF document text
- http://www.elitagida.com.tr/wp-content/plugins/super-forms/uploads/php/files/a03iv8kftbd0i07mba59n8l2j5/15914831801.pdfIn PDF document text
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4ac946808---24160147747.pdfIn PDF document text
- https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/3379b41065960cea5e8513d85020fc33/velusixiwakagitumenaxutub.pdfIn PDF document text
- http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608311e05c6b5---nizogigimujani.pdfIn PDF document text
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608361fa5d047---buputiredovuzelug.pdfIn PDF document text
- http://hotararicedo.ro/files/files/36335960426.pdfIn PDF document text
- https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b967136008---remudaxovurogafi.pdfIn PDF document text
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a5d1396222e---ketazakajarujitoruvipijuz.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/~3/1xuhb7AK25c/uplcv?utm_term=aficio+sp+4310n+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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c7e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC7E5 | 5500 bytes |
SHA-256: 9a2e9f47d2b0e24915bfabb190c7860d74f9093a0b040d321f931364913d5c79 |
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font_01_sfnt_off0000da9f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA9F | 10876 bytes |
SHA-256: b84148b66a0cd5af196fd5de9e4ffbdc5aa6011dc5439242cdd277982c61eca7 |
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